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Mining rig - Bitcoin Wiki Bitcoin mining riga

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From Bitcoin Wiki

A mining rig is a computer system used for mining bitcoins. The rig might be a dedicated miner where it was procured, built and operated specifically for mining or it could otherwise be a computer that fills other needs, such as performing as a gaming system, and is used to mine only on a part-time basis.

Warning: GPU mining is not very profitable (if at all) anymore, and even if you have free electricity, GPU rigs will likely never pay for themselves at this point!

4x5970 Mining rig http://blog.zorinaq.com/?e=47

Tips

  • Motherboards with on-board graphics (also referred to as integrated graphics) often are either problematic or unusable when more than one GPU card is installed. Choose a motherboard with no on-board graphics.
  • The following component lists might be used to help in building a new rig. To minimize shipping costs, components from the same supplier were preferred over compenents from the least expensive source.

Typical Dedicated Miner Configurations Using a Tower

One ATI 5830, Approximately 245 Mhash/s

Component Description Source Amount
Chassis n/a n/a n/a
Power Supply Rosewill Green Series RG530-S12 530W, 80 PLUS Certified NewEgg $50
Motherboard Foxconn M61PMP-K AMD NewEgg $45
CPU AMD Sempron 145 NewEgg $39
Memory 2GB DDR3 NewEgg $13
Graphics card Radeon HD 5830 NewEgg ($153) $110
Case Fan n/a n/a n/a
Storage Western Digital Caviar 80GB NewEgg $17
Media Drive DVD Rom Drive n/a n/a
Keyboard, Mouse and Display n/a n/a n/a
Total (Approx: $1.1755 /Mhash) $285 + s/h/t

Three ATI 5770s, Approximately 630 Mhash/s

Component Description Source Amount
Power Supply Rosewill Green Series RG530-S12 530W, 80 PLUS Certified NewEgg $50
Motherboard ASRock 890GX EXTREME4 NewEgg $125
CPU AMD Sempron 145 NewEgg $39
Memory 2GB DDR3 NewEgg $13
Graphics card Sapphire Radeon HD5770 1GB DDR5 superbiiz $339 ($113 x 3)
Storage Western Digital Caviar 80GB NewEgg $17
Total (Approx: $1.0412 /Mhash) $583 + s/h/t

Two ATI 5850s, Approximately 600 Mhash/s

Component Description Source Amount
Chassis n/a n/a n/a
Power Supply CORSAIR Builder Series CX600 V2 600W , 80 PLUS Certified NewEgg $70
Motherboard MSI 870-G45 AM3 AMD 770 ATX NewEgg ($5 more) $70
CPU AMD Sempron 145 NewEgg $39
Memory 2GB DDR3 NewEgg $13
Graphics card Sapphire Radeon HD 5850 XTREME $322 ($161 x 2)
Case Fan n/a n/a n/a
Storage Western Digital Caviar 80GB NewEgg $17
Media Drive DVD Rom Drive n/a n/a
Keyboard, Mouse and Display n/a n/a n/a
Total (Approx: $0.8917 /Mhash) $531 + s/h/t

Three ATI 5850s, Approximately 900 Mhash/s

Component Description Source Amount
Chassis n/a n/a n/a
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard MSI 890FXA-GD70 $195
CPU AMD Sempron 145 NewEgg $39
Memory 2GB DDR3 NewEgg $13
Graphics card Sapphire Radeon HD 5850 XTREME $483 ($161 x 3)
Case Fan n/a n/a n/a
Storage Western Digital Caviar 80GB NewEgg $17
Media Drive DVD Rom Drive n/a n/a
Keyboard, Mouse and Display n/a n/a n/a
Total (Approx: $0.9677 /Mhash) $877 + s/h/t

Three ATI 6990s, Approximately 2.1 Ghash/s

Component Description Source Amount
Chassis CoolerMaster HAF X $179
Power Supply SILVERSTONE ST1500 1500W, 80 PLUS Silver Certified Newegg $365
Motherboard MSI 890FXA-GD70 $195
CPU AMD Sempron 145 NewEgg $39
Memory 2GB DDR3 NewEgg $13
Graphics card 3 * Radeon HD 6990 NewEgg $2220 ($740 × 3)
Storage Western Digital Caviar 80GB NewEgg $17
Keyboard, Mouse and Display n/a
Total (Approx: $1.4438 /Mhash) $3,028 + s/h/t

Typical Dedicated Miner Configurations Using a Rack Mount

Budget AMD Sempron / Dual ATI 6990: Approximately 1.4 Ghash/s

Component Description Source Amount
Chassis IPC-4370S 4U P-Link Computer $85 (incl s/h)
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard MSI 870-G45 AM3 AMD 770 ATX NewEgg ($5 more) $70
CPU AMD Sempron 145 NewEgg $39
Memory 2GB DDR3 NewEgg $13
Graphics card 2 * Radeon HD 6990 NewEgg $1480 ($740 × 2)
Storage Western Digital Caviar 80GB NewEgg $17
Keyboard, Mouse and Display n/a
Total (Approx: $1.3057 /Mhash) $1,824 + s/h/t

Typical Multipurpose Miner Configurations

High-end Intel-based miner/gaming rig: single ATI 6990, Approximately 750 Mhash/s

Component Description Source Amount
Chassis CoolerMaster HAF 932 $140
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard MSI P67A-GD65 $173
CPU Intel Core i7-2700K NewEgg $340
Memory G.SKILL ECO Series 8GB NewEgg $55
Graphics card Radeon HD 6990 NewEgg $734
Heat Sink Fan CoolerMaster Hyper212+ NewEgg $40
Storage Seagate 1TB 7200RPM HDD NewEgg $70
Media Drive ASUS DVD-RW NewEgg $22
Keyboard LITE-ON SK-1788/BS PS/2 Keyboard NewEgg $8
Mouse V7 M30P20-7N PS/2 Mouse NewEgg $7
Display LG IPS231P-BN Black 23" 6ms IPS NewEgg $250
Total $1949 + s/h/t

High-end AMD-based miner/gaming rig: single ATI 6990, Approximately 750 Mhash/s

Component Description Source Amount
Chassis CoolerMaster HAF 932 $140
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard Biostar TA990FXE NewEgg $130
CPU AMD FX-8150 NewEgg $250
Memory G.SKILL ECO Series 8GB NewEgg $55
Graphics card Radeon HD 6990 NewEgg $734
Heat Sink Fan CoolerMaster Hyper212+ NewEgg $40
Storage Seagate 1TB 7200RPM HDD NewEgg $70
Media Drive ASUS DVD-RW NewEgg $22
Keyboard LITE-ON SK-1788/BS PS/2 Keyboard NewEgg $8
Mouse V7 M30P20-7N PS/2 Mouse NewEgg $7
Display LG IPS231P-BN Black 23" 6ms IPS NewEgg $250
Total $1832 + s/h/t

Mid-level AMD-based miner/gaming/workstation rig: single ATI 6870, Approximately 300 Mhash/s

Component Description Source Amount
Chassis CoolerMaster Centurion 5 NewEgg $50
Power Supply Antec Earthwatts EA-650 GREEN 650W, 80 PLUS BRONZE certified NewEgg $65
Motherboard MSI 970A-G46 NewEgg $90
CPU (incl. stock heatsink + fan) AMD FX-6200 NewEgg $169
Memory G.SKILL Value Series 4GB NewEgg $23
Graphics card Radeon HD 6870 $165
Storage Seagate 1TB 7200RPM HDD NewEgg $70
Media Drive ASUS DVD-RW NewEgg $21
Keyboard LITE-ON SK-1788/BS PS/2 Keyboard NewEgg $8
Mouse V7 M30P20-7N PS/2 Mouse NewEgg $7
Display HANNspree By Hanns-G HF225DPB 21.5" NewEgg $120
Total $798 + s/h/t

Mid-level Intel-based miner/gaming/workstation rig: single ATI 6870, Approximately 300 Mhash/s

Component Description Source Amount
Chassis CoolerMaster Centurion 5 NewEgg $50
Power Supply Antec Earthwatts EA-650 GREEN 650W, 80 PLUS BRONZE certified NewEgg $65
Motherboard MSI Z68A-G45 (B3) NewEgg $103
CPU (incl. stock heatsink + fan) Intel Core i5-2500K NewEgg $214
Memory G.SKILL Value Series 4GB NewEgg $23
Graphics card Radeon HD 6870 $165
Storage Seagate 1TB 7200RPM HDD NewEgg $70
Media Drive ASUS DVD-RW NewEgg $21
Keyboard LITE-ON SK-1788/BS PS/2 Keyboard NewEgg $8
Mouse V7 M30P20-7N PS/2 Mouse NewEgg $7
Display HANNspree By Hanns-G HF225DPB 21.5" NewEgg $120
Total $873 + s/h/t

See Also

Это интересно:

Bitcoin Mining – Bitcoin.com

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’s 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 make some calculations based on your electricity cost, the Bitcoin exchange rate and the increase in difficulty throughout time. Since not all of these variables are knows you will have to guess some as best as you can.

Use our basic Bitcoin mining calculator to help you compare miners

AntMiner S5 Bitcoin Miner Summorized 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 learn more about the AntMiner S5

Avalon 6 BitcoinMiner Summorized Review

The Avalon 6 is a great contender for both S5 and S7 AntMiners. From the small amount 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.

Using the Avalon 6 you can make a revenue of 0.12BTC each month, hardly something to write home about at the moment.

Click here to learn more about the Avalon 6

AntMiner S7 Bitcoin Miner Summorized Review

The AntMiser 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 would’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.

Click here to learn more about the AntMiner S7

AntMiner S9 Bitcoin Miner Summorized Review

The most advanced and most efficient Bitcoin miner today. If you’re serious about Bitcoin mining this is your rig. But since this miner just came out it’s possible that Bitcoin mining difficulty will now increase even more. At the current difficulty this miner can mine around 0.5 Bitcoins every month which makes it seem pretty profitable. 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.

Click here to learn more about the AntMiner S9

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 calculations this miner should break even in about 12 months making it a pretty risky investment as most miners become obsolete after 6-9 months. However if Bitcoin’s price continues to rise this miner may yet yield a good return on investment.

Click here to learn more about the Antminer R4

Avalon 7 Bitcoin Miner Summarized Review

The avalon 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 tags 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.

Click here to view deals on the Avalon 7

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Best Bitcoin Cloud Mining - Best Cloud Mining - Bitcoin .

Samsung’s new ‘upcycling’ initiative has seen the company repurpose outdated technology for novel and creative utilities, including the construction of a bitcoin mining rig from out of old smartphones.

Also Read: Arras Lives on Bitcoin for a Week and Proves Bitcoin Is Gaining Acceptance

The ‘Upcycling’ Program Has Seen the Company Turn 40 Used Galaxy S5s Into a Bitcoin Mining Rig

Although scant technical specifications have been made available regarding the rig, Samsung has reportedly claimed that eight Samsung Galaxy S5s can mine with superior energy efficiency compared to a standard desktop computer.

The mining rig was unveiled during a recent Samsung developer conference held in San Francisco. The rig is the brainchild of Samsung’s Creative Lab – an internal hub for innovation and development within Samsung that is located at the Samsung Digital City in Korea.

Aside from the cryptocurrency mining rig, Samsung program has also seen an old Galaxy table turned into an ubuntu-powered laptop, and a Galaxy S3 smartphone repurposed to monitor a fishtank. The company has also utilized an old phone featuring facial recognition software as the basis for the home security system.

Samsung Plans to Make Its Upcycling Software Available to All

The company has pledged to make plans for the showcased projects freely available online, in addition to the software that allowed Samsung’s Creative Lab to unlock and repurpose old phones. Samsung spokesperson, Robin Schultz, told motherboard that the “innovative platform provides an environmentally responsible way for old Galaxy mobile devices to breathe new life, providing new possibilities and potential extended value for devices that might otherwise be forgotten in desk drawers or discarded.”

Kyle Wiens, chief executive officer of iFixit – a company that is involved in repairing Galaxy S3s for Samsung’s initiative – has given generous praise to the upcycling program. Wiens stated “what [Samsung] built is a layer between the hardware and you being able to install anything you want on it. It’s a step lower than jailbreaking, it’s removing Android entirely.” Wiens describes the initiative as circumventing “the challenge with keeping old electronics running a long time is software,” adding that “with phones in particular, the old software is insecure and doesn’t run the new apps. So the question is, if you have this perfectly functional piece of hardware that doesn’t have good software anymore and you want to keep it running for ten years, how do you do that?”

Wiens Describes the Project as Having the Potential to Bolster the Secondary Market Value of Outdated Samsung Devices

Wiens states that “[Samsung] wants to maintain the value of their devices long term. If they know they’re going to justify a new price of a thousand dollars for a new Note, it’s easier to get people to spend that thousand dollars if they can resell it for five hundred.”

Samsung currently hosts a placeholder GitHub for the upcycling project. The site is expected to form the basis for a decentralized community built around the innovative repurposing of technology in future – through which individuals will be able to access the software required to remove Android, before accessing, sharing, and innovating new purposes for and manifestations of outdated technology.

What do you think of Samsung’s ‘upcycled’ smartphone-based bitcoin mining rig? Share your thoughts in the comments section below!

Images courtesy of Shutterstock, Wikipedia

Do you agree with us that Bitcoin is the best invention since sliced bread? Thought so. That’s why we are building this online universe revolving around anything and everything Bitcoin. We have a store. And a forum. And a casino, a pool and real-time price statistics.

проверенные краны биткоин.

Mining Crypto Currency – Scam Bitcoin

Last updated on November 24th, 2017 at 06:13 am

You already had the chance to see how Bitcoin miners take their “job” seriously in this post, when we wrote about the Frankenstein-like computers experts and amateurs were building in order to create digital currency.

If you still had any doubt about their commitment to the mining career, the next pictures will show you that they’re here to stay. These next 20 mining rigs are totally insane! Oh and if your interested we did a review on the best bitcoin mining software so you can be sure you get the most Hash per $ spent :)

1. 8 Core FPGA Bitcoin Miner

This rig is so complex it even looks like a model of a small city. And in the digital currency town every light is green!

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2. 2x Gigabyte HD7970 – wooden model

Imagine the power of a machine like this. We’re confused just by looking at all these wires!

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3.  Insane 4 x HD5870 Miner

You can almost feel the wind coming out of those fans.

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4. My Hobby Rig

Our favorite feature of this mining rig is the supports used to balance the legs of the table.

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5.  Sci Fi Mike Miner

This one is really good looking: with that sleek black box and the see through plastic supports.

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6. Little Farm

The heap of boxes is simply amazing. And the huge fan is a great detail.

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7. The Superior Frame

Never a simple self like this supported such a complex structure, we bet!

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8. The Moose’s Tip Jar

Ooohhh, this one could belong to the movie “Avatar”. If Pandora inhabitants could connect their special “braiding” to a Bitcoin mining rig.

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9. The Navidos Money Maker

It’s like having a wine rack full of digital money makers.

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10. The Ghetto Money Maker!

It’s hard to believe that what seems like a bunch of garbage stuck in a plastic box can be the solution to your financial problems.

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11. The Devil 13

The Antichrist of the Bitcoin mining universe.

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12. Mining Rig Extraordinaire – The Trenton BPX6806

It’s like those pastimes when you have to figure out how many objects are in the picture, minus the creepy security footage that’s playing on the computer screen. Can you count the number of towers?

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13. The Plan Man Rig

Two great details: the blue neon lights making us go crazy and the little fan swinging on the top of the mining pyramid.

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14. The Hippie Tech Mobo

Those elements on the top seem like they’re about to spit some spikes. No, they’re just making money!

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15. Monster Heater Mine

The mining rig of a geek with obsessive compulsive disorder. At least, this one is super organized.

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16. The Tech Farm

We can only imagine how hard it will be to untangle all these wires…

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17. The Fire Risk!

The number of fans is just too damn high! And also the danger rates.

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18. Vendo’s GPU

The latest trend: mine Bitcoins and make the laundry at the same time.

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19. Super Rig

This mining rig can create digital coins, make your lunch and raise your kids.

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20. The properly refrigerated rig

There’s one mining rig that won’t get (too) hot. Well, at least, that’s the goal.

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21. The Millionaire’s mine

This one has got to be the winner!

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And a BONUS for you: Little Baby Ghetto rig in Bitcoin Examiner office :)

фрибиткоин.

Samsung Made a Bitcoin Mining Rig Out of 40 . - Motherboard

Hobby Bitcoin mining can still be fun and even profitable if you have cheap electricity, an efficient bitcoin mining machine and get the best Bitcoin mining hardware.

It’s important to remember that Bitcoin mining is competitive. Today it is not smart 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.

Originally, Satoshi intended for Bitcoin to be mined on computer CPUs. However, Bitcoin miners discovered they could get more hashing power from graphic cards. Graphic cards were then surpassed by ASICs (Application Specific Integrated Circuits).

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. Think of a Bitcoin ASIC as specialized Bitcoin mining computers, Bitcoin mining machines, or “bitcoin generators”.

Don’t Get Confused

There is Bitcoin mining hardware, which mines bitcoins.

There are also Bitcoin hardware wallets like the Ledger Nano S, which store bitcoins.

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. 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 Antminer S7 or the Antminer S9.

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.

The miners in the table below are currently the most efficient Bitcoin miners on the market.

The Avalon6 gets 0.29 Watts/GH, but costs more than $200 more than the Antminer S7.

The Antminer S7 is more efficient, with 0.25 Watts/GH. The Antminer S7 also costs much less, and comes with 4.5 TH/s of hash power compared to the Avalon6’s 3.50 TH/s.

The AntMiner S7 is clearly the better option between these two miners, which are currently the most efficient miners available for purchase.

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

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.

Spondoolies Tech – Spondoolies Tech is an Israeli based mining hardware manufacturer.

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.

You can find Bitcoin mining equipment for sale on eBay.

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.

биткоин краны с моментальным выводом на blockchain 2017.

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