AntMiner S5 ~1155Ghs .51WGh 28nm ASIC Bitcoin Miner Bitmain antminer s5 - 1155 ghs asic bitcoin miner

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BitMain Announcing the AntMiner S5 Bitcoin ASIC Miner .


  • Low cost miner, with second-hand units available for under $200
  • Relatively low power demand of 590 Watts
  • Good for learning and experimentation


  • Noisy (~75dB) single fan design, although mods can quieten it
  • Spec hashrate of around 1155 GH/s is low by today’s standards

Buy Antminer S5

The AntMiner S5: Still Relevant to Modern Mining?

Bitmain released their AntMiner S5 Bitcoin miner in late 2014. At that time, it was one of the fastest and most efficient ASIC miners available, rivalled by the Spondoolies-Tech SP20.

However, the S5 has long since been surpassed by newer models.

As a product of a 28nm fabrication process, the S5 can’t be reasonably expected to compete with modern 16nm or 14nm ASIC designs in terms of hashrate or power efficiency.

Is there still a place for the venerable S5?

If you’re a hobbyist miner on a budget, with no interest in the profitability of transmogrifying electricity into bitcoins, then the S5 is worth considering.


Note: Before you buy an Antminer S5 make sure you already have Bitcoin mining software and a Bitcoin mining pool.

Used AntMiner S5s are available on eBay and Amazon in a price range between $190 and $299; most ship from America.

New S5s ship from Bitmain in China for $413, although there may be a waiting period before stock becomes available.

Remember to factor in shipping costs and possible customs duties.

S5 Compared to Other Hardware

Power Supply

The S5 will draw between 560 to 590 Watts at around 115 Volts. Any sufficiently-powered ATX Power Supply Unit will run the S5 without problems.

That means that your old PC power supply – or someone else’s second hand one – can be easily repurposed for Bitcoin mining.

Note that the efficiency of power supplies is rated as gold (10% of electricity wasted), silver (20% wasted) or bronze (30% wasted).

The efficiency of power supplies is a worthy topic of investigation for any aspiring Bitcoin miner; inefficient, unrated power supplies will waste electricity and create extra noise and heat.

A list of PSU ratings may be found here.

Ideally, get a PSU from the Corsair Enthusiast Series Bronze Certified PSU; either the 650 or 750 Watt model.

The 650W model is available second hand for a little over $100. Corsair has a good reputation among Bitcoin miners and other tech enthusiasts for building reliable hardware. The Bronze series offers good value.

One thing to note is that under-clocking the S5 is difficult without a special, 9 Volt-capable PSU.

Bitcoins per Month (Profitability)

Our Bitcoin mining calculator is helpful for calculating the profitability of any Bitcoin miner, based on relevant data.

Be sure to run your own calculations, using your local power rate, preferred mining pool and the price at which you intend to buy your S5.

The CoinWarz site will automatically fill in the currentBTC-USD price, Difficulty and Block Reward.

Note that in July 2016, the Block Reward will halve to 12.5 BTC for every block solved.

In order to see any bitcoins from a single S5, you will need to join a Pool. The odds of solo-mining a block with a single or even several S5s are virtually zero.

The post-halving Reward, relatively expensive Power and AntPool’s Pool Fees are entered,
along with the current Bitcoin price and all the relevant stats of the AntMiner S5.

The results are, as expected, highly unprofitable:

Red bracketed numbers indicate negative returns.

Even if Bitcoin price were to double to a new all-time high around $1400, the returns would remain negative.

However, if you’re able to bring your electricity costs below 10c per KWh, you could just about break even at the current price of ~$700.

So, given a much higher Bitcoin price, cheap power, stable Difficulty and perhaps modifications to improve efficiency, profiting from a new or used S5 is not impossible

Power Efficiency

The S5 will produce 1 Gigahash for every 0.51 Watts it consumes. This figure can be expressed as 0.51 J/GH.

The S5’s real power consumption, as measured by your electric bill, will vary depending on your PSU’s efficiency and the ambient temperature.

0.51 J/GH is a lot more efficient than the S3 (0.78 J/GH) but a lot less efficient than the more expensive AntMiner S7 (0.25 J/GH) or S9 (0.098 J/GH) models. Traditionally, each new BitMain miner series doubles efficiency.

It’s possible to upgrade the S5’s hashrate, primarily by increasing its frequency (aka overclocking) but this increases the miner’s power and cooling requirements.

There are ways, ranging from simple to extreme, to manage the overclocking burdens. Gains of up to ~400 GH/s are achievable but require serious effort. This video demonstrates oil immersion cooling.


The S5 is open at the top and bottom and the sides are constructed of fairly lightweight plastic.

This limits the placement of the unit and somewhat reduces its safety. One upside of the plastic casing is that the unit only weight 2.5 kg. / 6.5 lbs.


The noise from a stock S5’s 120mm fan has been compared to an industrial vacuum.

It’s definitely an unsuitable device to run in your living environment; it’ll drown out conversation and irritate people or pets.

The only solution is to replace the stock ~75 decibel fan with a quieter kind. Often a secondary fan is added to the back-end, where screw holes exist for this purpose.


The S5 will automatically search out an available IP address to use and features an intuitive control panel.

The MinerLink software will allow you to monitor the status of your miner(s), easily configure your mining pool settings, upgrade the device’s firmware and share access privileges to the miner over a network connection.

The MinerLink interface.


Onboard temperature must be maintained below 80^C / 175^F. Keeping the onboard temperature below 60^C / 140^F will prolong the lifetime of the S5.

As with all miners, the lower the operating temperature, the higher they can be overclocked.


The S5 is unlikely to ever turn a profit, so it’s hard to justify the cost of buying one new.

That said, a cheap, second-hand S5 in decent condition is a great tool for learning the ropes of Bitcoin mining.

It represents a low-cost introduction to the complex business of Bitcoin mining.

The S5 is also a good platform to experiment with hardware, firmware and software tweaks and mods.

At roughly one tenth the price of the cutting-edge Antminer S9, the S5 is cheap enough to try potentially damaging operations like over/under-clocking and immersion cooling.

S5 Compared to Other Hardware

Review by: Jordan Tuwiner

Rating: 3

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Review of the Bitcoin Asic Miner Bitmain Antminer S5

1) Chip Specifications: BM1384

Bitmain’s 3rd generation Bitcoin mining ASIC, the BM1384 provides significant improvements over the previous BM1382 chip. Hashrate per mm2 at voltage 0.75V has been increased over 20% while reducing power consumption by 30%. This improvement is the result of months of hard work and investment in the Bitcoin ecosystem.


Building upon the foundation from the S1 and S3, the Antminer S5 retains the same small form factor of previous miners, but, with the more efficient BM1384 chips. The S5 uses 1 fan for quieter home operation and features multiple improvements over the strong S3 design.


Hash Rate: 1155 GH/s ±5%

Power Consumption: 590 W (at the wall)

Power Efficiency: 0.51 J/GH (at the wall)

Rated Voltage: 12V

Dimensions: 298 mm x 137 mm x 155 mm

Cooling: 1x 12038 fan

Operating Conditions: 0 °C to 35 °C

Certified By: FCC / CE

Network Connection: Ethernet  


1.   Power consumption figures vary with your PSU’s efficiency, the ambient operating temperature and the accuracy of the power meter.

2.   PSU: A power supply unit is not included, and you will need to provide an ATX PSU. There are 4 PCI-e connectors for +12V DC input and all four are required. Do not connect more than one PSU to the same hashing board.

3.   When better power efficiency is needed in the future due to higher network difficulties, you may want to buy some special PSUs 9V DC with more than 10A output, which will allow you to have a 0.2J/GH mining efficiency, but at lower hashing speed.

A New Cooling Solution:

  • Heat will be dissipated from the top of the chips, which are powered in a chain style design on the PCB. This PCB layout concentrates the heat onto one side of the board, making heat diffusion efficient.

  • Two customized aluminium heat sinks draw all the heat to the middle of the miner, and allow the use of just one fan to keep the S5 cool and quiet.
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AntMiner T9 Bitcoin SHA-256 Mining ASIC overview - Reviews .

The Bitmain Antminer S5 is a piece of bitcoin mining hardware that was released several years ago. While it is no longer stocked by Bitmain itself, the product continues to circulate via other sellers and as second-hand wares from members of the mining community. It is known for being a simple miner to use, even for those who are new to the world of cryptocurrency.

Antminer S5 – Still One of The Best Bitcoin Miner for Beginners

Features and Specifications of Antminer S5

Antminer S5 Feature and Specifications

Hash Rate:

1155 GH/s ±5%

Power Consumption:

560 to 590 W

Power Efficiency:

0.51 J/GH

Chips per unit:

60x Bitmain BM1384 Gen3

Rated Voltage:



298 mm x 137 mm x 155 mm


1x 12038 fan

Operating Conditions:

0 °C to 35 °C

Network Connection:


Certified By:



Between $150 and $500 (secondhand)


The Antminer S5 will automatically look for IP addresses that are available for use. This is done via a DHCP function that gets straight onto your actual network and bypasses the typical issue that some miners have of using a box static IP address.

The device comes fitted with an intuitive control panel that is easy to use. You simply need to start by logging in with your root username and password, the latter of which you should change as soon as you can. Then, you simply need to enter your pooling information through the IP address login and you’re good to go. It’s a very brief setup process and once you’re done with the pool configuration panel, you’re ready to mine.

It is fairly simple to use and operate the S5. You can check on the conditions of the miner easily and set automatic shut down times for when the miner hits a particular temperature, or easily alter frequencies. The Antminer S5’s onboard temperature must be maintained below 80°C, although keeping it below 60°C will improve its lifespan.

The Bitmain Antminer S5 is also fully compatible with MinerLink software, a popular choice for miners. Through this software – and some other types of mining software – you will be able to configure settings and allow others access privileges to the Antminer S5 via network connections. You can also use it to upgrade firmware for the miner.

Image source:

Power and Power Supply

As with most mining hardware, you will need a standard power supply unit to run the Antminer S5 properly. The miner draws up to 590 Watts at around 115 Volts and can run on virtually any ATX PSU that can supply enough power. This is good for those who would like to re-purpose an old power supply from a PC or can get one for a cheap price secondhand.

The Antminer S5 is known to produce about 0.51 J/GH, depending on the efficiency of the PSU you use and the surrounding temperature of the miner. This hash rate may have been impressive for its time, but it is quite outdated by today’s standards, making it best suited to hobbyist miners who are not particularly looking to make that much of a mining profit. With that being said, the device uses a very low power consumption for its hash rate, so it is a solid piece of mining equipment.

You can overclock the miner to improve its hash rate by increasing its frequency, of course, but do note that you will need more power supply for the miner and to keep the miner cool if you do so. If you are willing to put in a lot of extra effort, you can up the rate to around 400 GH/s, but the task is a formidable one.

Image source:

Conversely, if you aim to underclock the miner to save power when the value of the currency you’re mining dips too low for your liking. The underclocking system of the Antminer S5 is decent, allowing you to use 480 Watts and still perform at a respectable hash rate for the device’s specifications. Bear in mind that if your plan is to underclock this miner, you will likely need a 9 Volt-capable PSU for the job.

On a separate note, the Antminer S5’s fan is incredibly noisy and can easily drown out conversations and make it difficult to have the miner in your living space. However, you can make modifications to the unit to lessen the noise or replace the fan altogether.

In a nutshell…

It’s not clear whether the Bitmain Antminer S5 will still make you a huge profit now, as it is an old model. However, for its age, it is a solid device and has good mining capabilities and a low power consumption. Its ease of use and low current price point make it an acceptable choice for a hobbyist miner or someone who wants to learn the ropes of mining, or even do some experimentation without worrying about breaking the bank.

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