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How to Build an Ethereum Mining Rig [6 GPU Guide]

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Image: Ethereum Mining GuideSo you just found out about Ethereum mining and looking to build your first Ethereum mining rig. This guide will walk you through choosing GPUs and what software to run for mining.

Building an Ethereum mining rig is a long term investment. Things like power consumption, GPU and price of Ethereum will all affect your bottom line in Ether mining. We recommend checking out an Ethereum mining calculator before starting.

At a minimum you should have at least 6 GPUs and mine using a pool such as ethermine. You’ll want to part of a mining pool since it’ll be the best use of your resources.

GPUs work perfectly for mining cryptocurrencies so most of the parts in your rig won’t matter as much as the GPUs.

Here is what you’ll need to build an Ethereum mining rig:

Summary: Ethereum Mining Hardware List



Detailed Hardware List

Power Supply / PSU

Since this mining rig will be running for years you don’t want to cut corners on your power supply.

For powering 6 GPUs it’s important to buy a 1200W power supply with Platinum connectors. Using anything lower than a Platinum connector will cause a loss of energy during use which will ultimately factor into your bottom line. If you’re planning on using less than 6 GPUs you can go with a less powerful power supply.



Video Cards (GPUs)

The most important part of a mining rig is the video cards. Currently the most effective cards are the GeForce 1070 and AMD RX 470/480/570/580. One of the newest and most powerful GPUs for mining is the AMD Vega 64 8GB which can reach 46MH/s.

Due to the massive demand for Ethereum mining rigs you’ll see cards sold out at most retailers. If you’re willing to pay a premium you can find them at a higher cost but we recommend finding the cards for their retail price. The GeForce 1070 is easier to find from our research.

There are also stock checkers you can use to determine what retailers have the cards in stock and its price.

Looking for used cards on eBay is probably the best place to buy GPUs at the moment.

Popular GPU Ethereum Mining Hashrates

GPUMH/s
GTX 107027
Radeon 390X 8GB30
Radeon RX 48024
GTX 106019
Radeon Vega 6446



Motherboard with 6 PCIe Slots

To connect all of the GPUs to your rig you’ll need a motherboard with at least 6 PCIe slots. You’ll see most motherboard offer PCI x16 and PCIe x1 slots but the risers will connect into a PCIe x16 or x1 slot (this doesn’t affect the mining hashrates).



Processor/CPU

All mining activities run on the GPUs so you won’t need a very powerful CPU to run the rig. Your CPU won’t be used during mining so a lower power chip is prefered. An Intel i3 or Celeron chip will work just fine in a LGA 1150 motherboard.



Solid State Drive

To run your mining rig you only need about a 60gb hard drive which you should get as a solid state drive. This will allow the OS to run smoothly and prevent drive failures. If you plan on mining without a pool you’ll want to get a larger hard drive to download the entire blockchain (~10gb+) but we highly recommend using a mining pool.



RAM/Memory

Ram isn’t very important for your mining rig so we recommend only getting 4gb or 8gb worth of memory. If you’re running Windows you might want to opt for more memory.



PCIe Risers

If you plan on using more than 3 GPUs you’ll need PCIe Risers. These will allow you to connect the graphics cards to the motherboard without attaching them directly to the motherboard.



Open Air Mining Case

One of the more unique elements of a mining rig is having a computer case that can handle 6 GPUs. Luckily people are making cases designed to hold a lot of graphics cards, an open air case is recommended for keeping the rig running optimal & cool.

6 GPU Open Air Case for Crypto Currency Mining Rig Frame
GPU Mining Krates - Personal Computers


Energy Monitoring

One important part of mining is monitoring your power usage since it directly affects your profits. We recommend picking up a WeMo Insight outlet to monitor energy cost. Additionally this will let you turn off the computer remotely via the outlet if an error occurs. The WeMo outlet has a 1800W limit so be sure to get one for each rig you’re building.

If you want a similar plug without wifi you can get a simpler version.



Ethereum Mining Pools

You’ll want to work in an Ethereum Mining Pool. Think of solving block hashes as buying lottery tickets, the more computers working on a block the higher chance you have to solve. Being in a pool with thousands will give you a more consistent payout than mining alone.


There are plenty of Ether mining pool, probably the biggest is ethermine.org.

Other popular pools include nanopool.org and ethpool.org.


Ethereum Mining Software

Before you start mining make sure you have a wallet setup to send your payout to. One of the most popular wallets is Jaxx.

Read more about Cryptocurrency wallets.


Tons of programs exist for you to mine in a pool or solo one of the most popular programs is Claymore’s GPU Miner. We found Claymore’s to be the easiest to use with a mining pool plus great performance results.

We were getting around 27 MH/s using a single GTX 1070.

Starting Claymore’s GPU Miner: (Windows)

  1. Download Claymore’s Miner (Github).
  2. Once extracted edit the start.bat file using notepad.
  3. You’ll want to erase what is there and put this if you’re using ethermine.org
    setx GPU_FORCE_64BIT_PTR 0
    setx GPU_MAX_HEAP_SIZE 100
    setx GPU_USE_SYNC_OBJECTS 1
    setx GPU_MAX_ALLOC_PERCENT 100
    setx GPU_SINGLE_ALLOC_PERCENT 100
    EthDcrMiner64.exe -epool eu1.ethermine.org:4444 -ewal <Your_Ethereum_Address>.<RigName> -epsw x
  4. After editing start.bat run it and you should see command prompt running your miner with stats.


Ethereum plans to switch to Proof of Stake at the end of 2017 which will eliminate mining. But even if Ethereum is no longer mined you can find a new coin to mine, we recommend checking out whattomine which will keep you in the know for highest ROI coins to mine.

Be sure to stay up to date with the latest mining news on the EtherMining Reddit Community.

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