Bitcoin Mining Hardware Guide
The best Bitcoin mining hardware has evolved dramatically since 2009
At first, miners used their central processing unit (CPU) to mine, but soon this wasn't fast enough and it bogged down the system resources of the host computer. Miners quickly moved on to using the graphical processing unit (GPU) in computer graphics cards because they were able to hash data 50 to 100 times faster and consumed much less power per unit of work.
During the winter of 2011, a new industry sprang up with custom equipment that pushed the performance standards even higher. The first wave of these specialty bitcoin mining devices were easy to use Bitcoin miners were based on field-programmable gate array (FPGA) processors and attached to computers using a convenient USB connection.
FPGA miners used much less power than CPU's or GPU's and made concentrated mining farms possible for the first time.
Today's modern and best bitcoin mining hardware
Application-specific integrated circuit (ASIC) miners have taken over completely. These ASIC machines mine at unprecedented speeds while consuming much less power than FPGA or GPU mining rigs. Several reputable companies have established themselves with excellent products.
Bitcoin Mining Hardware Comparison
Currently, based on (1) price per hash and (2) electrical efficiency the best Bitcoin miner options are:
AntMiner S7
AntMiner S9
Best Bitcoin Mining Hardware
Two major factors go into determining the best bitcoin mining hardware: (1) cost and (2) electricity efficiency.
Bitcoin mining is difficult to do profitably but if you try then this Bitcoin miner is probably a good shot.
ASIC Bitcoin Mining Hardware
Application-specific integrated circuit chips (ASICs) are bitcoin mining hardware created solely to solve Bitcoin blocks. They have only minimal requirements for other normal computer applications. Consequently, ASIC Bitcoin mining systems can solve Bitcoin blocks much quicker and use less less electricity or power than older bitcoin mining hardware like CPUs, GPUs or FPGAs.
As Bitcoin mining increases in popularity and the Bitcoin price rises so does the value of ASIC Bitcoin mining hardware. As more Bitcoin mining hardware is deployed to secure the Bitcoin network the Bitcoin difficulty rises. This makes it impossible to profitably compete without a Bitcoin ASIC system. Furthermore, Bitcoin ASIC technology keeps getting faster, more efficient and more productive so it keeps pushing the limits of what makes the best Bitcoin mining hardware.
Some models of Bitcoin miners include Antminer S5, Antminer U3, ASICMiner BE Tube, ASICMiner BE Prisma, Avalon 2, Avalon 3, BTC Garden AM-V1 616 GH/s, VMC PLATINUM 6 MODULE, and USB miners.
AntMiner U2
BPMC Red Fury USB
GekkoScience
Best Bitcoin Cloud Mining Services
For those not interested in operating the actual hardware then they can purchase Bitcoin cloud mining contracts. Being listed in this section is NOT an endorsement of these services. There have been a tremendous amount of Bitcoin cloud mining scams.
Hashflare Review: Hashflare offers SHA-256 mining contracts and more profitable SHA-256 coins can be mined while automatic payouts are still in BTC. Customers must purchase at least 10 GH/s.
Genesis Mining Review: Genesis Mining is the largest Bitcoin and scrypt cloud mining provider. Genesis Mining offers three Bitcoin cloud mining plans that are reasonably priced. Zcash mining contracts are also available.
Hashing 24 Review: Hashing24 has been involved with Bitcoin mining since 2012. They have facilities in Iceland and Georgia. They use modern ASIC chips from BitFury deliver the maximum performance and efficiency possible.
Minex Review: Minex is an innovative aggregator of blockchain projects presented in an economic simulation game format. Users purchase Cloudpacks which can then be used to build an index from pre-picked sets of cloud mining farms, lotteries, casinos, real-world markets and much more.
Minergate Review: Offers both pool and merged mining and cloud mining services for Bitcoin.
Hashnest Review: Hashnest is operated by Bitmain, the producer of the Antminer line of Bitcoin miners. HashNest currently has over 600 Antminer S7s for rent. You can view the most up-to-date pricing and availability on Hashnest's website. At the time of writing one Antminer S7's hash rate can be rented for $1,200.
Bitcoin Cloud Mining Review: Currently all Bitcoin Cloud Mining contracts are sold out.
NiceHash Review: NiceHash is unique in that it uses an orderbook to match mining contract buyers and sellers. Check its website for up-to-date prices.
Eobot Review: Start cloud mining Bitcoin with as little as $10. Eobot claims customers can break even in 14 months.
MineOnCloud Review: MineOnCloud currently has about 35 TH/s of mining equipment for rent in the cloud. Some miners available for rent include AntMiner S4s and S5s.
Bitcoin Mining Hardware ASICs
Hobby Bitcoin mining can still be fun and even profitable if you have cheap electricity and get the best and most efficient Bitcoin mining hardware.
It’s important to remember that Bitcoin mining is competitive. It’s not ideal for the average person to mine since China’s cheap electricity has allowed it to dominate the mining market. If you want bitcoins then you are better off buying bitcoins.
Bitcoin Mining Hardware Comparison
What is an ASIC Bitcoin Miner?
Since it’s now impossible to profitably mine Bitcoin with your computer, you’ll need specialized hardware called ASICs.
Here’s what an ASIC miner looks like up close:
The Dragonmint 16T miner.
Originally, Bitcoin’s creator intended for Bitcoin to be mined on CPUs (your laptop or desktop computer). However, Bitcoin miners discovered they could get more hashing power from graphic cards. Graphic cards were then surpassed by ASICs (Application Specific Integrated Circuits).
Think of a Bitcoin ASIC as specialized Bitcoin mining computers, Bitcoin mining machines, or “bitcoin generators”. Nowadays all serious Bitcoin mining is performed on dedicated Bitcoin mining hardware ASICs, usually in thermally-regulated data-centers with access to low-cost electricity.
Don’t Get Confused
There is Bitcoin mining hardware, which mines bitcoins.
There are also Bitcoin hardware wallets like the Ledger Nano S, which secure bitcoins.
Check Profitability
You can use our calculator below to check the mining hardware above. Input your expected electricity price and the hash rate of the miner for an estimate.
Profitability Factors
The Bitcoin price and the total network hash rate are the two main factors that will affect your profitability.
Our calculator is more accurate than most others because ours assumes the 0.4527678% daily increase in network hash rate. This has been the average daily increase over the past 6 months.
Most other calculators do NOT include this metric which makes mining appear way more profitable than it actually is.
The Bitcoin Price
Bitcoin mining is a booming industry, but the Bitcoin price increasing can help make up some of these losses.
The Bitcoin price is increasing at an average of 0.3403% per day over the past year. Try messing with the calculator using different prices.
Know your Competition
It may seem easy to just spin up a miner.
But you NEED to take a look at just how serious mining is.
The video below offers an inside look at one of China’s largest mines.
How to Find the Best Bitcoin Miner
There are some important factors to look at when determining which Bitcoin mining ASIC to buy:
Hash rate – How many hashes per second can the Bitcoin miner make? More hashes cost more, which is why efficiency is crucial.
Efficiency – You’ll want to buy the most efficient bitcoin mining hardware possible. Right now, this is the Halong Mining Dragonmint T1. Since miners use a large amount of electricity, you want to buy one that converts the most amount of electricity into bitcoins.
Price – How much does the bitcoin miner cost? Cheap mining hardware will mine less bitcoins, which is why efficiency and electricity usage are important. The fastest and more efficient mining hardware is going to cost more.
Don’t try to buy a miner based on only price or only hash rate. The best ASIC miner is the most efficient bitcoin miner. Aim for value.
Bitcoin Miners for Sale on eBay or Amazon
If you’re a hobby miner who wants to buy a couple rigs for your house, eBay and Amazon both have some decent deals on mining hardware.
Used Bitcoin Mining Hardware for Sale
Both new and used bitcoin mining rigs and ASICs are available on eBay. One may want to buy used ASIC mining hardware on eBay because you can get better prices.
eBay’s customer protection ensures you’ll get a working product. Other bundled equipment may be included with your purchase depending on the seller.
We recommend purchasing the Dragonmint or the Antminer S9.
Just Want Bitcoins?
If you just want bitcoins, mining is NOT the best way to obtain coins.
Buying bitcoins is the EASIEST and FASTEST way to purchase bitcoins.
Get $10 worth of free bitcoins when you buy $100 or more at Coinbase.
Hardware Profitability
You can use a bitcoin mining profitability calculator to determine your estimated cost of return on your mining hardware.
Be sure to take electricity costs into account. Most mining hardware appears profitable until electricity costs are accounted for.
Most Efficient Bitcoin Miners
Good Bitcoin mining hardware needs to have a high hash rate. But, efficiency is just as important.
An efficient Bitcoin miner means that you pay less in electricity costs per hash.
To improve your efficiency, there are also companies that will let you order hardware to their warehouse and run the miners for you.
You could also cloud mine bitcoins. But both options are a lot less fun than running your hardware!
Bitcoin Mining Hardware Companies
Halong Mining – Halong Mining is the newest mining hardware company. They have the best miner available. Unfortunately, they already sold out of their first batch but a new batch should be available for sale soon.
Bitmain – Bitmain makes the Antminer line of Bitcoin miners. Bitmain is based in China and also operates a mining pool.
BitFury – BitFury is one of the largest producers of Bitcoin mining hardware and chips. Its hardware is not available for purchase.
Bitcoin Mining Equipment
In addition to a Bitcoin mining ASIC, you’ll need some other Bitcoin mining equipment:
Power Supply – Bitcoin rigs need special power supplies to funnel and use electricity efficiently.
Cooling Fans – Bitcoin hardware can easily overheat and stop working. Buy a sufficient amount of cooling fans to keep your hardware working.
Bitcoin Mining Without Hardware?
It’s still technically possible to mine bitcoins without dedicated mining hardware.
However, you’ll earn less than one penny per month. Mining bitcoins on your computer will do more damage to your computer and won’t earn a profit.
So, it’s not worth it unless you’re just interested to see how the mining process works. You’re best bet is to buy dedicated hardware like the Antminer S7 or Antminer S9.
USB Bitcoin Miners
Using a Bitcoin USB miner with your computer was once a profitable way to mine bitcoins. Today, however, USB miners don’t generate enough hashing power to mine profitably. If you just want to get a Bitcoin miner USB to learn, eBay is a good place to buy a cheap Bitcoin miner.
Halong Mining
The world of crypto was in disbelief when Halong Mining, a new ASIC startup, announced their brand new Dragonmint T16. Halong claimed it to be the most powerful – and efficient – Bitcoin mining ASIC on the market. If they delivered on their promise, Bitmain’s reign as king of ASIC developers would come to an abrupt end.
Unsurprisingly, many prominent members of the Bitcoin community were in disbelief, as cryptocurrency in general has been plagued by fake startups and ICO scams.
In an effort to build trust with their potential buyers, Halong Mining released videos of their ASICs running as advertised. Moreover, they claimed that $30 million dollars was invested in research, development, and prototypes.
Their first batch of Dragonmint T16’s was set for shipment in March of 2018. As the deadline crept up, the world patiently waited for the much anticipated release.
If Halong Mining really did produce the most efficient SHA-256 miner to date, the startup would prove their skeptics wrong and dethrone Bitmain, a company only concerned with their monopoly on the market.
After prominent members of the Bitcoin community doubted Halong’s legitimacy, including Cøbra, the company proved them wrong. Miners shipped as described, and Halong delivered – quite literally – on their promises.
Slush, the creator of Slush Mining Pool and the TREZOR hardware wallet, claimed on Twitter the miners are legitimate. Halong Mining has earned their keep, finally viewed as a reputable company after months of speculation and debate.
Over 100 individuals took part in the development of the chip, including BtcDrak, one of the leading pseudonymous Bitcoin core developers. According to Bitcoin Magazine, BtcDrak remarked:
The project is motivated by, and driven to help facilitate greater decentralisation in Bitcoin mining at all levels, and make SHA-256 great again.
Dragonmint T16 vs. Antminer S9
The Dragonmint T16 was Halong Mining’s first ASIC to hit the market. Boasting 16 TH/s, it is the most powerful ASIC miner. Additionally, the T16 is remarkably power efficient, consuming a mere 0.075J/GH. Moreover, the Dragonmint T16 utilizes ASICBOOST, an exploit of Bitcoin’s algorithm which improves efficiency by 20%.
Compared to Bitmain’s Antminer S9, which consumes 0.098J/GH, the Dragonmint T16 is not only more powerful, but more efficient as well. The difference in power consumption seems small. However, when mining on a large scale, every bit of saved electricity counts.
What do you get when you combine power and efficiency? An incredibly profitable ASIC! The T16 is 30% more efficient than its competition.
Note that is appears profitable even with high electricity costs ($0.12 per KW/h). With $0.03 / KW/h it’s even more profitable:
The T16’s new DM8575 chip design is largely responsible for the ASIC’s notable improvements over Bitmain’s S9.
Although the Antminer S9 still yields a decent mining profit, it is no match for Halong Mining’s newest chip, the Dragonmint T16. Hashrate and power consumption are the primary factors in mining profitability, next to electricity cost – Halong Mining’s Dragonmint T16 is clearly superior to Bitmain’s best ASIC miner.
ASICs’ Impact on Cryptocurrency
Bitcoin is based on blockchain technology, a decentralized platform which takes power away from a central authority and gives it to the average person. Sensitive information is stored on the blockchain rather than large data centers, and is cryptographically secured. A vast amount of people, known as miners, all work together to validate the network, instead of just one person or government.
In the beginning, CPUs were used to solve cryptographic hash functions, until miners discovered that GPUs were far better equipped for mining. As block difficulty increased, miners turned primarily to GPUs.
Eventually, technology was developed solely for mining, known as ASICs, or Application Specific Integrated Circuits. Their hashrates are significantly higher than anything GPUs are capable of.
With stellar performance comes a high price tag – the best ASIC chips will run you a few thousand dollars each. Upon creation, Bitcoin blocks were confirmed by the average person using their desktop – once ASICs hit the market, things changed.
ASICs rendered GPUs useless. ASIC developers, including Bitmain, granted early access to large mining cartels rather than the average person. Nowadays, a large majority of Bitcoin mining takes place in China where electricity is cheap.
Thousands of ASICs all mine simultaneously in a mining farm (large warehouse). Evidently, most people can’t afford just one or two of ASICs, not to mention thousands of them.
When ASICs hit the market, the blockchain’s validation process became more centralized than decentralized, as the majority of validation is done by a single mining company, rather than being spread out amongst many miners. Unfortunately, Bitcoin is no longer as decentralized as it was once intended to be.
Ant Miner S9
Since from the start, Bitcoin's Difficulty has recorded a very few and much of the time consecutive month to month increases , especially from late November 2015. It moved from 520,569,941 GH/s to the present record high of 1,426,731,353 GH/s, which infers Difficulty has nearly tripled starting now and into the foreseeable future. This zenith was accomplished on May 24th 2016. That enormous advancement has been incited by critical wander into Bitcoin mining development and operations.
Having that fantastic improvement, it has made Bitcoin the world's most fit enlisting framework by far, notwithstanding one surprising consequence of that fast advancement was extended centralization. There was social affair of advantages, in China, where mining is most advantageous that come to fruition to a couple of contenders (e.g. KNC) being kicked out of the business.
We have endeavored to process the measure of money that the Chinese have placed assets into mining; we survey it to be in the an immense number of dollars. In reality, even with free power we can't see how they will ever recuperate this money. Perhaps they don't understand what they are doing, yet that is not likely at this scale or they have some riddle advantage that we don't think about.
A comparative Chinese high ground has been substantially more convincing at isolating the advantage subordinate pro excavator from the market. At this stage, in order to reinforce the framework, help decentralization and possibly even to warmth space, most home or office diggers aren't despite hashing with the ultimate objective of getting money.
The efficiency of everything aside from the most capable operations will likely be attempted, with the square reward isolating coming into view. Will the new S9 be an unmistakable favorable position for humbler and relaxation movement excavators and give back their lost advantage given that advantages gotten from the present period of mining hardware are reducing and will most likely accomplish negative returns ensuing to separating?
There are a few OK, all around assessed USB stick diggers accessible these days. The best new option is the GekkoScience Compac, conveyed self-sufficiently, and tragically in a little print run. When you're examining this present, it's outlandish you'll find these around the primary esteem extent of $25 per unit. That just exhibits how stunning of a decision these are.
They're prepared to convey no under 8 GH/s (gigahashes consistently), and up to 11 GH/s, which is amazing for a USB stick. You can figure what that will convey the extent that Bitcoin using this Bitcoin Mining Calculator. At current, it makes about $0.50 consistently. Not decisively a lot–but as I said toward the begin, these are for side intrigue purposes, not profit.
In the event that you're not prepared to find one of those available, another awesome decision is the Avalon 3 Nano. It was released in mid 2015, and can be gotten for as of late over $25 at HolyBitcoin.com. It will create an unfaltering 3 GH/s, and is at an unrivaled esteem stretch out for by and large purposes. In any case, the Avalon 3 Nano is fairly harder to set-up, plan, and use.
On the off chance that you're acquiring the contraption altogether as a gift to help train some person about Bitcoin, you may pick you couldn't think less about the hashing vitality of the device. Taking all things into account, I'd recommend the ASICMiner Block Erupter. These are for the most part open for under $20 straight from Amazon and a great deal of other online wholesalers, went with brilliant, essential rules, and have specialized bolster available.
Spondoolies SP20
On the fourth of May 2016, Spondoolies shut down shockingly. They released the SP20 in the late 2014. A total of eight 28nm RockerBox ASIC mining chips were stuffed by Spondoolies onto 2 circuit sheets inside a limited edge compute.
Extraordinary at its shabby cost with a size and tumult level perfect for home excavators, the SP20 is an immaculate digger. In any case, its relative inefficiency is the critical drawback. The SP20 drags an extensive measure of vitality for its hashrate, which by present day rules is low.
The Spondoolies SP20 was seen as an extraordinary mining contraption in the midst of its run the show. Concerning money related sense, it's no longer practical to run a SP20 given its low viability, with the Bitcoin framework's available Difficulty.
With basically a comparable cost, the AntMiner S5 is a great deal more power-capable. Despite the likelihood that there's some specific gear mod you'd get a kick out of the opportunity to keep running with the SP20, it's up 'til now not worth the purchase beside as a touch of mining blessing.
Best Bitcoin Mining Hardware for 2018 – Bitcoin Miner Reviews
The following page reviews the best hardware available today in order to make some sort of a profit with Bitcoin mining.
If you’re completely new to Bitcoin mining please read our “Is Bitcoin mining still profitable?” post before moving on. It will give you a good idea about the profitability of mining and will make you think twice before entering this very competitive niche.
If however, you are aware of the competitive nature of Bitcoin mining and still want to get in the game, here you will be able to find the best Bitcoin mining hardware available. The good news is that there are not many mining hardware companies left that make ASIC miners so choosing will probably be easy. That’s also the bad news. Even though many websites state long lists of Bitcoin mining hardware, only a handful of mining rigs can deal with the rising Bitcoin mining difficulty that’s out there these day.
How to compare Bitcoin miners
Below is a side by side comparison of all relevant miners. Underneath the table you’ll be able to see a summarized review of each of the miners. Keep in mind that in order to see how profitable you can be with any Bitcoin miner you’ll need to use a Bitcoin mining calculator based on your electricity cost, the Bitcoin exchange rate and the increase in difficulty throughout time. Since not all of these variables are known you will have to guess some as best as you can.
Select miner
AntMiner S9
Antminer R4
Antminer T9
AntMiner S7
AntMiner S5
Antrouter R1
Use our basic Bitcoin mining calculator to help you compare miners
Antminer S5 Bitcoin Miner Summarized Review
The Antminer S5 is the entry level Bitcoin miner for someone who isn’t ready to part away with more than a few hundred bucks. Users who have purchased it seem mostly pleased with the device. However this is an outdated device and with today’s mining difficulty and decreasing block reward you won’t make more than 0.05 BTC each money in revenue. This means you’ll need to run it for about one year and 8 months to get a full Bitcoin. Some customers also complained about the device being too noisy, but that’s just how a miner works – it’s loud and hot.
Click here to view Antminer S5 deals on eBay
Avalon 6 BitcoinMiner Summarized Review
The Avalon 6 is a great contender for both S5 and S7 AntMiners. From the small number of reviews that can be found online people are saying that it’s not nearly as loud as your usual miner and the hash rate is pretty reasonable. However at the current price tag I see little reason to choose it over the competition, it’s $100 more than the S7 that brings to the table superior results.
Click here to view Avalon 6 deals on eBay
Antminer S7 Bitcoin Miner Summarized Review
The Antminer S7 was the raining champion up until a few months ago. Even at today’s difficulty levels and with the block reward halving you can still make 0.15BTC a month. It’s not a lot at the moment but if the Bitcoin price continues to rise it may be a profitable investment.
However I wouldn’t suggest buying this rig due to the fact that it’s neither here nor there. It’s too expensive for an entry-level device and it’s too weak to generate any substantial amount of Bitcoins. Users who bought the device seem generally happy with it however it was first introduced on August 2015, so it’s not that new.
Antminer S9 Bitcoin Miner Summarized Review
The most advanced and most efficient Bitcoin miner today is the Antminer S9. If you’re serious about Bitcoin mining this is your rig. At the current difficulty this miner can mine around 0.02 Bitcoins every month which makes it seem like it would break even within a year. However we did not take into account the electricity costs, pool fees and hardware cost. Not to mention the fact the difficulty can rise and the Bitcoin price can drop.
It seems that even though this is the toughest miner out there, there’s only a small amount of time until it too will become outdated. Until that happens though, it looks like a pretty reliable piece of equipment.
Antminer R4 Bitcoin Miner Summarized Review
The Antminer R4 is intended for hobby mining – basically people who want to mine Bitcoins at home. Even though it can’t compete with the S9 it will probably be a good contender for the S7. The main advantage it has over other miners is the fact that it is has a specialized cooling unit that is much quieter than any other Bitcoin miner out there – since it’s made for a home environment.
According to our mining calculator this miner should break even in about 12 months. However if Bitcoin’s price continues to rise this miner may yet yield a good return on investment.
Avalon 7 Bitcoin Miner Summarized Review
The Aavalon 721 (or Avalon 7 as it is known commonly) is the latest Bitcoin miner supplied by Avalon in late 2016. It has a lower price tag than most of the advanced miners but is also less powerful. It seems to be a good choice for people who are looking for a cheaper entry level miner and don’t want to go for an Antminer S7.
According to our calculations, this miner should break even in about 24 months, making it a pretty risky investment. You can also connect up to 5 Avalon 721s in a row creating a powerful 30 TH/s mining rig.
Antminer T9 Bitcoin Miner Summarized Review
The Antminer T9 is a more reliable, cheaper version of the successful S9 model. However, the T9 uses almost 30% more power than the S9 making it much less attractive in terms of return on investment. If you want to get up and mining as soon as possible and reliability is more important to you than efficiency, then we’d say the T9 is a reasonable choice. If you don’t pay for power and just want a good, fast miner you can “fire up and forget,” the Antminer T9 will fit the bill nicely.
2018 Bitcoin Mining Hardware Comparison – Who’s the Best Miner?
Becoming a major Bitcoin miner in 2018 is a bit like setting up a shoe factory; only profitable if you’re able to compete with the Chinese. Specifically, you’ll need cheaper electricity and better access to the latest mining hardware. That’s a pretty tall order, considering that several Chinese regions are over-supplied with state-subsidised power and that the country produces most of the world’s ASIC miners, usually in close partnership with Bitcoin miners.
On top of that, the mining game got even tougher following the second halving event, which reduced the reward for successfully mining a block from 25 bitcoins down to 12.5:
Daily rate of Bitcoin creation dipped from
200 after the 2 nd halving in early July.
Chart courtesy of theTheHalvening.com.
Electricity costs will depend on your location and situation. Where Milli can help is by recommending the best available ASIC miners but first, we’ll need to explain a few technical mining terms.
Bitcoin Mining Hardware Jargon
Hashrate: the measure of how many attempts at solving a Bitcoin block a miner attempts per second. Obviously, the more attempts the greater the chance of solving the block and claiming the 12.5 BTC reward.
This figure was originally stated as H/s (hash per second). As Bitcoin mining hardware got faster and faster, SI unit prefixes were required:
- Kilohash or KH/s = thousands of H/s
- Megahash or MH/s = millions “
- Gigahash or GH/s = billions “
- Terahash or TH/s = trillions “
- Petahash or PH/s = quadrillions “
TH/s is often used to state the hashrate of current generation mining hardware. PH/s is commonly used for the combined hashrate of a major mining facility or pool, as well as the total hashrate of the entire Bitcoin network (currently at a staggering 1665 PH/s).
Joule per Gigahash: A Joule is a measure of energy, representing 1 watt over 1 second. The fewer Joules used to produce a Gigahash, the higher an ASIC miner’s electrical efficiency. As electricity is the major recurring expense of miners, this stat (often abbreviated as J/GH) is of prime importance when comparing miners.
Difficulty: with hashrate ramping up since Bitcoin’s release, one could be forgiven for expecting that blocks would be solved increasingly quickly. Difficulty is an automatic control measure which prevents that from occurring. Every two weeks, difficulty adjusts to the current hashrate so that blocks continue to be solved every 10 minutes (on average).
Profitability: this bottom-line number is calculated from the current Bitcoin price and Difficulty, your miner’s cost and hashrate and your electrical cost in fiat money per kWh. This ever-adjusting Difficulty mechanism, combined with Bitcoin’s volatile price, make calculating the future profitability of Bitcoin mining very tricky!
99Bitcoins’ mining profitability calculator is good for this purpose but if you’re serious about getting into mining, it’s recommended that you create a custom spreadsheet with inputs reflective of various exchange rate and Difficulty projections. Remember to account for probable downtime due to power cuts, hardware or software failures and the like.
Break-even point is the length of time it takes for your miner to pay for itself, if it ever does.
Pool Fees: given a total network hashrate in the thousands of Petahash, unless you control several PH/s your odds of successfully solo-mining a block are virtually nil. Mining pools are cooperative groups which combine their hash-power and distribute any rewards which the pool earns proportional to individual hashrates. Pools have different fees and reward structures which be compared here. The larger the pool, the more regular returns can be expected.
The current distribution of hashrate among mining pools, courtesy of Blockchain.info.
Bitcoin mining hardware – the top 3
Now that you understand the basic metrics used to assess Bitcoin mining hardware, here’s a comparison of the leading mining devices:
Mining hardware comparison
Below are statistics about the Bitcoin Mining performance of ASIC hardware and only includes specialized equipment that has been shipped.
GPUs, CPUs and other hardware not specifically designed for Bitcoin mining can be found in the Non-specialized_hardware_comparison.
- Mhash/s = millions hashes per second (double sha256 raw speed performance; may not be very energy efficient with some models)
- Mhash/J = millions hashes per joule (energy efficiency; 1 joule of energy is 1 watt during 1 second: 1 J = 1 W*s)
- W = watt (maximum power consumption, i.e. energy per unit of time: 1 W = 1 J/s)
Be sure to research any of these vendors and machines intensely before spending any money.
Hardware wallet
A hardware wallet is a special type of bitcoin wallet which stores the user's private keys in a secure hardware device.
They have major advantages over standard software wallets:
- private keys are often stored in a protected area of a microcontroller, and cannot be transferred out of the device in plaintext
- immune to computer viruses that steal from software wallets
- can be used securely and interactively, private keys never need to touch potentially-vulnerable software
- much of the time, the software is open source, allowing a user to validate the entire operation of the device
This page is an attempt to summarize all the known developments of hardware wallets that can use Bitcoin as part of their operation.
Security risks
To date there have been no verifiable incidents of Bitcoins stolen from hardware wallets. Hardware wallets are relatively new, but at least for the time being they have maintained a good track record, unlike the numerous incidents of Bitcoin theft from Internet-connected computers.
However, it's important to understand that hardware wallets are a high value target and depend on various assumptions holding true to maintain security. They are not a silver bullet, and there are several realistic ways in which a hardware wallet can fail to protect your Bitcoin. These risks need to be carefully considered when deciding how much trust to place in a hardware wallet, and which hardware wallet to buy.
How a hardware wallet could fail to protect your Bitcoin:
- Malware swaps recipient Bitcoin addresses: a hardware wallet won't protect you from being tricked into sending Bitcoin to the wrong address. For example, malware on a PC could monitor for high value transactions and then swap out the recipient's authentic Bitcoin address for an address controlled by the attacker. When the stakes are high, multi factor (e.g., over the phone) confirmation of a recipient's Bitcoin address is recommended.
- Insecure RNG (Random Number Generator): hardware wallets rely on the security of an RNG, often embedded in hardware, to generate your wallet's private keys securely. Unfortunately, it is notoriously difficult to verify the true randomness of the RNG. An insecure RNG may create wallet keys that can later be recreated by an attacker, by generating psuedo-randomness that would seem statistically indistinguishable from true randomness yet still be predictable to an advanced attacker. An RNG may become insecure as a result of malicious weakening or an unintentional mistake. This failure mode is common to any wallet generation procedure in which the true randomness of the source of entropy being used can not be verified.
- Imperfect implementation: the security of all computing devices relies on the quality of their implementation. Hardware wallets are no exception. Bugs at the software, firmware or hardware level may allow attackers to break into a hardware wallet and gain unauthorized access to secrets. Even if the design is perfect, proving the security of a hardware or software implementation is a very hard, mostly unsolved problem. To date, no wallet in existence is implemented using provably correct software.
- Compromised production process: even a perfect software and hardware implementation of a hardware wallet would be vulnerable to a corrupt production process that introduces intentional or unintentional holes into the final product. The introduction of hardware backdoors is a real concern for high risk financial and military applications.
- Compromised shipping process: a compromised fulfillment process may substitute or modify secure devices for superficially identical but insecure replacements. Government programs that intercept hardware and modify them in route to insert backdoors are known to exist.
- While not a silver bullet hardware wallets can still be extremely useful, assuming you take care to use a good one: an authentic device manufactured by trustworthy, technically competent security experts with a good reputation (e.g., TREZOR).
- Cold storage solutions implemented with open source software and general purpose hardware (e.g., BitKey, Pi Wallet), using a verifiable source of entropy such as physical dice may provide superior security for some use cases (e.g., long term savings).
Connecting to a full node
By default, most hardware wallets instruct the user to connect to the manufacturer's own web interface. The web page cannot steal the user's private keys but can spy on them or trick them into accept fake payments.
Hardware wallets only keep the private keys safe and create spending transactions; they cannot tell you if you have actually received coins and in what quantity. Bitcoin's security model also requires that full node wallets are used. If not, somebody could pay you with a transaction of something other than bitcoin. If bitcoin is digital gold then a full node wallet is your own personal goldsmith who checks that the incoming payments are actually real. Also the third-party wallet will see all your bitcoin addresses so this is very damaging to your privacy.
Most hardware wallets can be connected to Electrum bitcoin wallet. Electrum can be connected to your own full node via a server.
The Best Bitcoin Miners: Our Top Bitcoin Mining Hardware Picks
You may have never used a Bitcoin or Bitcoin Mining Hardware, but chances are you have heard about them by now. Since it’s creation in 2009, Bitcoin has been talked about in the technology and financial sectors, due to the potential importance of an Internet currency in the future. At its highest levels, a bitcoin is simply a code inside the computer that can be used as money to purchase items or services from anyone who accepts a Bitcoin as a means of payment. A miner is the hardware used to mining bitcoins (we will discuss this further later).
Currently, there are only 21-million available (or will be created). And will hopefully help reduce the possibility of inflation on the market. Being an online monetary system, it’s quite obvious that Bitcoin has drawn the attention of many people who are interested in its potential effects.
But there is more to Bitcoin’s than the simple process of transactions for goods. You are here because you are interested in the creation of bitcoins and Mining Hardware.
Our Top Bitcoin Miner Picks (Updated Regularly)
Bitcoin Starter Kit
If you are new to Bitcoins, start by reviewing these article:
What is Mining in the Bitcoin world
At a high level mining is the process by which individuals (like yourself) solving complicated math problems, in order to break down a code that is necessary to be rewarded with a Bitcoin. Upon completion of the math problem, the user would be given a Bitcoin as compensation.
The mining process is one of the pillars that supports the bitcoin community and is critical to the success of the Bitcoin industry. As a miner you are part of something evolutionary, the creation of a “new currency” and a new way of thinking about money.
CPU Mining: The Old School
At first, bitcoin devices used the CPU in your computer hardware as a very slow method of solving the block equations. However, after a short period of time it was realized that computer GPU’s (your graphic card) could be used to improve the mining process and work more efficiently and, most importantly, quicker at solving bitcoin blocks.
FPGA Bitcoin Mining Units
The evolution continues with the introduction of FPGA Mining Hardware which brought a reduce power consumption used by the hardware. This however was short lived and quickly replaced with the now popluar ASIC technology
ASIC Mining Hardware
The current industry leader for any bitcoin miner is called ASIC hardware (or ASIC mining hardware) and is a must-have for any Bitcoin miner.
Why ASIC Bitcoin Mining hardware?
Application-specific integrated circuit chips, or ASIC hardware was originally created to solve Bitcoin equations, while not requiring an overextended amount of normal computer applications. These ASIC systems could do much more complicated equations, at a much quicker rate, while using less electricity and power than older hardware like CPU, GPU and FPGA.
As mining becomes more popular, the value of ASIC hardware increases, as it is nearly impossible to keep up with the mining difficult without an ASIC system. Furthermore, ASIC technology appears to be the quickest and most affective method at this time. This makes it the most effective way to go about mining.
Top Factors that affect a Bitcoin Miner
What is Hash Rate
The hash rate of a ASIC device is the amount of mathematical equations that the computer can make per second. For example, a machine that can make 20 TH/s can make up to 20 trillion calculations. Oh yeah, that’s PER SECOND.
As you can see, as more people have become involved in mining it’s unheard of an individual who can make that many calculations that quickly, before ASIC bitcoin mining hardware that is.
Current difficult level
This greatly impacts your potential returns, as the difficult goes up your ROI goes down since it takes longer to solve a block. Its important to keep an eye on the difficult level as more ASIC base bitcoin mining hardware comes online.
Energy / Power Consumption
The problem with computer hardware that is running that fast is that it is going to burn up a lot of electricity and power. Therefore, the second factor you should consider for a mining system is the amount of energy it puts off.
Price: A Critical ROI Factor
Make no mistake, mining can make you money (and alot of it if you are serious), but expect to pay over $2000 for quality bitcoin mining hardware. Always make sure that your bitcoin miner investment will make a positive ROI.
The other price factor to consider is the current price of 1 bitcoin. This is the number one factor that really determines if mining bitcoin is worth it or not. If the price of one bitcoin goes up then it has a positive affect on most of the other factors.
The Best Bitcoin Mining Device (for now)
As the popularity of Bitcoin miner systems increase, so does the amount of companies that are putting out ASIC bitcoin mining hardware and claim to be the best. However, the truth is that there are a few that are better than the rest and certainly worth your money more than competitors.
One of the top Bitcoin miner machines available is the KNCMiner Neptune. KNCMiner has a few different options, but the Neptune really hits hard, while also being extremely efficient. This ASIC bitcoin mining hardware includes:
- Hash rate of 3000 GH/s or 3TH/s
- Price: $5995
Major Update . KNCminer now has BIG competition from the 5.5TH/s SP35 YUKON which comes in at $2,995 . Now making it the most powerful miner at an affordable price.
Grab your KNCminer Bitcoin Mining Hardware and Make a Huge ROI
Bitcoin Exchange
Once you have accumulated Bitcoin’s, you may wonder what to do with them. If you don’t want to purchase goods or services, you can just as easily trade your Bitcoin in exchange markets, much like the New York Stock Exchange or other exchange markets.
When trading Bitcoin, you will want to consider the liquidity of the Bitcoin, the fee’s associated with trading, as well as the location of the exchange (as with any sort of money, there is attempted illegal activity for mining and knowing where your exchange is located will help add to the legitimacy of the transaction). Some popular Bitcoin exchanges:
These are all online resources that help you manage and trade your Bitcoin currency. You can transfer Bitcoin directly from your Bitcoin Wallet to any exchange.
What’s Next Beyond Bitcoin?
It’s obvious that Bitcoin’s are something that everyone is keeping their eye on. As the Internet continues to grow, the value of an online currency offers great potential for transaction purposes. And aside from Bitcoin’s, there are new virtual currencies such as Litecoin’s that are also created with the purpose of being an online currency system.
US Search Mobile Web
Welcome to the Yahoo Search forum! We’d love to hear your ideas on how to improve Yahoo Search.
The Yahoo product feedback forum now requires a valid Yahoo ID and password to participate.
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Your search engine does not find any satisfactory results for searches. It is too weak. Also, the server of bing is often off
I created a yahoo/email account long ago but I lost access to it; can y'all delete all my yahoo/yahoo account except for my newest YaAccount
I want all my lost access yahoo account 'delete'; Requesting supporter for these old account deletion; 'except' my Newest yahoo account this Account don't delete! Because I don't want it interfering my online 'gamble' /games/business/data/ Activity , because the computer/security program might 'scure' my Information and detect theres other account; then secure online activities/ business securing from my suspicion because of my other account existing will make the security program be 'Suspicious' until I'm 'secure'; and if I'm gambling online 'Depositing' then I need those account 'delete' because the insecurity 'Suspicioun' will program the casino game 'Programs' securities' to be 'secure' then it'll be 'unfair' gaming and I'll lose because of the insecurity can be a 'Excuse'. Hope y'all understand my explanation!
I want all my lost access yahoo account 'delete'; Requesting supporter for these old account deletion; 'except' my Newest yahoo account this Account don't delete! Because I don't want it interfering my online 'gamble' /games/business/data/ Activity , because the computer/security program might 'scure' my Information and detect theres other account; then secure online activities/ business securing from my suspicion because of my other account existing will make the security program be 'Suspicious' until I'm 'secure'; and if I'm gambling online 'Depositing' then I need those account 'delete' because the insecurity 'Suspicioun' will program the casino game 'Programs' securities' to be… more
chithidio@Yahoo.com
i dont know what happened but i can not search anything.
Golf handicap tracker, why can't I get to it?
Why do I get redirected on pc and mobile device?
Rahyaftco@yahoo.com
RYAN RAHSAD BELL literally means
Question on a link
In the search for Anaïs Nin, one of the first few links shows a picture of a man. Why? Since Nin is a woman, I can’t figure out why. Can you show some reason for this? Who is he? If you click on the picture a group of pictures of Nin and no mention of that man. Is it an error?
Repair the Yahoo Search App.
Yahoo Search App from the Google Play Store on my Samsung Galaxy S8+ phone stopped working on May 18, 2018.
I went to the Yahoo Troubleshooting page but the article that said to do a certain 8 steps to fix the problem with Yahoo Services not working and how to fix the problem. Of course they didn't work.
I contacted Samsung thru their Samsung Tutor app on my phone. I gave their Technican access to my phone to see if there was a problem with my phone that stopped the Yahoo Search App from working. He went to Yahoo and I signed in so he could try to fix the Yahoo Search App not working. He also used another phone, installed the app from the Google Play Store to see if the app would do any kind of search thru the app. The Yahoo Search App just wasn't working.
I also had At&t try to help me because I have UVERSE for my internet service. My internet was working perfectly. Their Technical Support team member checked the Yahoo Search App and it wouldn't work for him either.
We can go to www.yahoo.com and search for any topic or website. It's just the Yahoo Search App that won't allow anyone to do web searches at all.
I let Google know that the Yahoo Search App installed from their Google Play Store had completely stopped working on May 18, 2018.
I told them that Yahoo has made sure that their Yahoo members can't contact them about anything.
I noticed that right after I accepted the agreement that said Oath had joined with Verizon I started having the problem with the Yahoo Search App.
No matter what I search for or website thru the Yahoo Search App it says the following after I searched for
www.att.com.
WEBPAGE NOT AVAILABLE
This webpage at gttp://r.search.yahoo.com/_ylt=A0geJGq8BbkrgALEMMITE5jylu=X3oDMTEzcTjdWsyBGNvbG8DYmyxBHBvcwMxBHZ0aWQDTkFQUEMwxzEEc2VjA3NylRo=10/Ru=https%3a%2f%2fwww.att.att.com%2f/Rk=2/Es=plkGNRAB61_XKqFjTEN7J8cXA-
could not be loaded because:
net::ERR_CLEARTEXT_NOT_PERMITTED
I tried to search for things like www.homedepot.com. The same thing happened. It would say WEBPAGE NOT AVAILABLE. The only thing that changed were all the upper and lower case letters, numbers and symbols.
Then it would again say
could not be loaded because:
net::ERR_CLEARTEXT_NOT_PERMITTED
This is the same thing that happened when Samsung and At&t tried to do any kind of searches thru the Yahoo Search App.
Yahoo needs to fix the problem with their app.
Yahoo Search App from the Google Play Store on my Samsung Galaxy S8+ phone stopped working on May 18, 2018.
I went to the Yahoo Troubleshooting page but the article that said to do a certain 8 steps to fix the problem with Yahoo Services not working and how to fix the problem. Of course they didn't work.
I contacted Samsung thru their Samsung Tutor app on my phone. I gave their Technican access to my phone to see if there was a problem with my phone that stopped the Yahoo Search App from working. He went to Yahoo and… more
$46k Spent on Bitcoin Mining Hardware: The Final Reckoning
In the two previous articles of this series, Dario Di Pardo listed the highs and lows of having spent many thousands of dollars on pre-ordered bitcoin mining hardware and then having to endure delays, poor communication and broken promises, as some of the companies failed to provide the promised equipment in time.
In this last part of the series (see one and two here), Di Pardo tells CoinDesk which companies finally came good on their promises and which left him wishing he'd just spent his bucks on bitcoin. Di Pardo told CoinDesk, if he had one learned one thing from the experience, it was: ¨No more pre-ordering for this guy.¨
Vendor: Black Arrow
Product: Prospero X-3 (converted to bare chips)
Price including shipping: $4,978
Order date: 18th November 2013
Anticipated shipping date: 24th February 2014
Actual shipment date (chips): 11th July
Delay: 5 months
Status: Converted to ASIC chips
As somewhat anticipated, Black Arrow missed their revised shipment date of 8th May.
According to the company, they have been experiencing issues concerning the miner's backplane, which are causing almost two months of additional delay.
Black Arrow recently announced the issues to be resolved and that both X-1 and X-3 miner orders would be dispatched by the end of July.
Together with the company's latest news update, the option to convert pre-ordered miners into bare ASIC chips was provided, implying that each X-3 order could be exchanged for 100 ASIC chips, whereas you would get six chips for an X-1 order.
When a mining company starts offering a miner-for-chips exchange, it might be a good idea to go with the offer, or you could end up with nothing at all, as I learned from my experience with HashFast. With this in mind, together with the now huge delay in shipment and the fact they are not increasing compensation further to match competitors' prices at shipment time (which they said they would do earlier), I decided to go for the chips.
Obviously, one cannot mine with chips alone. Fortunately, Technobit, a Bulgarian company, would be capable of turning these chips into mining rigs, where each 400 GH/s rig would contain four ASIC chips.
Because Minersource, a mining gear and co-location company as well as Black Arrow's US-based reseller, organized a group buy for all customers who converted their order into chips, the board assembly at Technobit can now be purchased at a discount. Even more, they managed to provide us a deal where each board assembly can be alternatively paid for with four additional chips.
So with some money on top for chip coolers, controllers and power supplies (controllers and power supplies not necessary when opting for co-location), I would get a 5 TH/s miner with a price tag that matches today's stock prices, instead of the now overpriced 2 TH/s X-3 miner (excluding the 1 TH/s compensation Black Arrow would send after all current orders have been shipped).
Technobit is currently in the process of assembling all miners for the group buy, which will take about two weeks to complete.
Although none of the X-3 orders have been currently shipped, some X-1 customers are now reporting receiving their hardware.
Vendor: HashFast
Product: Sierra (1.2 TH/s)
Price including shipping: $6,696
Order date: 18th November 2013
'Guaranteed' delivery date: 15th February 2014
Status: Bankruptcy announced 7th June (no product or refund received)
Not surprisingly, HashFast entered bankruptcy under chapter 11 on 7th June.
As a result and most unfortunately, when that ship went down, my money went down along with it.
Because I initially wasn't included in the list of creditors the company presented to the bankruptcy Trustee (no surprise there either), I filed my claim online through the court's site.
I can only hope at this point that as a result of the reorganization process, I will get at least some of my money back.
Vendor: Virtual Mining Corporation (VMC)
Product: Fast-Hash One Platinum Edition (1 TH)
Price including shipping: $6,479
Order date: 24th November 2013
Anticipated shipping date: January 2014
Status: Refunded 23th June
In addition to the Wood Law Firm investigation, Virtual Mining Corporation and its parent company Active Mining Company are now under investigation by the Missouri Secretary of State because the CEO of both companies, Kenneth Slaughter, wasn't following proper procedures when soliciting investors.
Maybe as a result, shortly after this announcement the company's website went offline and is now only displaying a refund form intended for former customers.
After applying for my refund using this form, I almost immediately got the order amount transferred to the bitcoin address provided.
Although glad I made it out if this adventure with only some minor remaining health issues, I feel sorry for the many customers still waiting for their money.
If the company will manage to ever get back on its feet, is yet to be seen.
Vendor: Bitmine
Product: CoinCraft Desk 1 TH/s (+ 0.4 TH/s compensation unit)
Price including shipping: $5,758
Order date: 28th November 2013
Anticipated shipping date: February, week 1
Actual shipping date: 2nd April
Delay: 7 weeks and 2 days
Status: Miners performing well
Bitmine has manufactured some sturdy mining hardware, with both the 1 TH/s Desk and the 0.4 TH/s compensation unit I received hashing continuously and flawlessly for over three months now.
However, because of the delays in shipment of the CoinCraft Desk and CoinCraft Rig that resulted in many disappointed customers, the company is struggling to keep afloat.
Due to the many refund requests which caused a shortage of funds, Bitmine is now postponing further refunds to customers till as far as October, much to the their frustration – a similar situation CoinTerra customers have been facing.
To raise the necessary funds to survive, the company is now offering hosted mining plans and a revised, lower priced 1 TH/s CoinCraft Desk.
Vendor: KnCMiner
Product: Neptune (converted to 3 TH/s Jupiter)
Price including shipping: $10,175
Order date: 2014-01-07
Anticipated shipping date: Q2 2014
Actual shipping date: April 29th
Delay: None
Status: Miner repaired
The repair process of the seven broken boards was fairly smooth and a few days after sending back to KnCMiner the broken ones, I received new boards – properly packed this time.
The 28nm Jupiter miner I took in exchange for my Neptune order now hashes away steadily at about 3.1 TH/s while consuming around 3,800 watts at the wall, which averages out to about 1.22 W/GH/s.
The new 20nm Neptune miner that has been shipping as of the end of June, hashes at around 3.3 TH/s while only consuming half the power per gigahash than its younger brother does.
Despite the efficiency improvement and the fact that Neptune customers – at least those who took the time to read the offer's small print – will additionally receive a compensation unit in August, I don't think I made too big of a deal when converting my order after all, as I got the Jupiter rig two months earlier.
Vendor: Alpha Technology
Product: Viper (Scrypt) Miner (250 MH/s)
Price excluding shipping: £5,450 ($8,984)
Order date: 2014-01-10
Anticipated shipping date: July 2014
Delay: None
Alpha Technology eventually announced further increasing the performance of both available Scrypt miners, to match competitor products at shipment time.
The 18 MH/s Viper will now be performing at a minimum of 50 MH/s, whereas the 90 MH/s miner will be hashing at a minimum of 250 MH/s.
While approaching the July shipment deadline, the company went awfully quiet.
Whether this will prove to be a positive thing, has yet to be discovered.
Vendor: CoinTerra
Product: TerraMiner IV 2 TH/s (converted to 2x 1.6 TH/s)
Price including shipping: $7,253
Order date: 2014-01-12
Anticipated shipping date: May 2014
Actual shipping date: 29th May
Delay: 'None'
Status: Converted to 2x 1.6 TH/s miners
After still not getting any replies to my emails I sent to the CoinTerra support team asking for a (partial) refund, I took a hint from one CoinDesk commenter and decided to call them instead.
The experience turned out to be pretty similar to participating in a telephone game where you'd have to be the 100th caller in order to win a prize, except that you'd probably win said prize sooner than someone from CoinTerra actually answering the phone.
However, when you get a hold of somebody eventually, you realize the company has some great support representatives working there who really care about your case.
But as time IS money in this business, the company really ought to expand its support staff in order to limit customer frustration.
After a long period of mailing and calling back and forth I took the presented offer of getting an additional TerraMiner IV (1.6 TH/s) for an extra $1,000. Additionally, I opted for the cheaper (ground) shipment option instead, to reduce the extra costs.
Getting two miners for a total of $7,000 excluding shipping costs wasn't the best offer after all, as a few days after I accepted the deal, you could buy a single, now in stock TerraMiner for $3,000.
My pre-order was finally sent out on 29th May, 7 weeks after they began shipping from stock.
After about 10 days of operation one TerraMiner broke down and had to be sent back for repair. As a result, I lost about a month of (precious) mining time from this machine.
To this day, the hashrate of both rigs combined remains unstable, varying between 2.7 and 3.0 TH/s.
Vendor: Bitmain
Product: AntMiner S3 batch 1
Price including shipping: 0.75 BTC
Order date: 2014-06-30
Anticipated shipping date: 20th July
Actual shipping date: 20th July
Delay: None
Status: Hashing
To discover what all the fuss was about, I decided to order the latest AntMiner from Bitmain.
The S3, a product that has been selling like hotcakes since its release, reaches hashrates up to 441 GH/s while consuming merely 340 watts from the wall.
No surprises, no delays, no tricks, but plain getting what you paid for, as you would expect from any other decent company.
Bitmain even offered compensation in the form of a 10% coupon or seven percent refund, because actual specifications were slightly off initial specifications.
Mining image via Shutterstock
The leader in blockchain news, CoinDesk is a media outlet that strives for the highest journalistic standards and abides by a strict set of editorial policies. CoinDesk is an independent operating subsidiary of Digital Currency Group, which invests in cryptocurrencies and blockchain startups.
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