Best ATX Power Supplies for Mining – Efficiency is a must!

Although it’s quite common to think that a GPU-based mining rig requires huge amounts of electricity to operate, there is lot of misinformation circulating online regarding this topic. It’s true that mining rigs need a lot of power to work, and it’s also true that power supply is one of the most important components in a mining machine, however, in order to efficiently mine Ethereum (ETC) or Monero (XMR) cryptocurrencies, you don’t really need to have a monstrous 2000 W power supply.

Read more: The Best PCI-E Riser Cables for Cryptocurrency Mining in 2021

You see, there are two important things that you need to consider when buying a PSU for your new mining rig. Firstly, mining doesn’t consume all of your system’s resources, nor it uses the full capacity of your graphics card. GPUs are primarily designed for gaming, and they feature various components that are unnecessary for mining. This means that only GPU cores are busy running mining calculations, while other components are idle most of the time.

Secondly, graphics cards, unlike CPUs, perform just as good when they are underclocked or undervolted. Some graphics cards can be underclocked as much as 200 MHz, and their power levels can be reduced up to 60% depending on the model. What this means is that a mining rig featuring six GPUs that is rated at 1200 watts of power consumption will actually consume only about 600 watts of power.

Read more: The Best Options for Cheap PSU for Mining

Best ATX PSUs – Where to Buy – Recommended Products

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Corsair HX Series, HX1200, 1200 Watt, Fully Modular Power Supply, 80+ Platinum

About this item

  • 80 Plus Platinum: Runs cooler and uses less power than less efficient power supplies
  • Fully Modular: Allows user to only use the cables they need for a cleaner looking build with better airflow
  • 10-year warranty: Backed by Corsair’s legendary technical support and customer service
  • 135mm FDB fan with Zero RPM mode: Virtually silent operation at low loads. 8 PATA connector
  • Plus12V Rail Switch: Gives the user the choice of a single plus12V rail or multiple plus12V rails

Corsair HX Series, HX1000, 1000 Watt, Fully Modular Power Supply, 80+ Platinum Certified

About this item

  • 80 Plus Platinum: Runs cooler and uses less power than less efficient power supplies
  • Fully Modular: Allows user to only use the cables they need for a cleaner looking build with better airflow
  • 10-year warranty: Backed by Corsair’s legendary technical support and customer service
  • 135mm FDB fan with Zero RPM mode: Virtually silent operation at low loads,+12V Rail Switch: Gives the user the choice of a single +12V rail or multiple +12V rails
  • ATX12V v2.4 and EPS 2.92 standards and is backward compatible with ATX12V 2.2, 2.31 and ATX12V 2.01 systems

Which Power Supply Should I Get?

Before you decide to purchase a power supply for your mining rig, you need to determine the total amount of wattage your mining system will draw. To do that, all you have to do is sum up the wattage of all of your system’s components. You will probably get a big number, however, keep in mind that this represents the maximum theoretical load of your system, which in reality will probably never occur. Now, add in the equation the fact that your CPU will most of the time run in an idle state, and that your undervolted or underclocked graphics cards will consume 10-60% less power depending on the model.

Having an oversized power supply, however, does have some benefits. PSUs usually work best at about 80% load. This enables them to slow down their fans, and generate less heat waste. So overall, if your system consumes around 800 watts under full load, then a 1000 watt power supply should be more than good enough.

If you plan to build a mining rig, then we recommend getting a modular power supply. This will save you the hassle with cables, and will allow you to comfortably connect all of your system’s components, and remove unused cables that you don’t need. Lastly, if you aim to be a professional miner, then you should get yourself a smart power supply. These PSUs usually have integrated circuits that allow you to remotely monitor your system’s power consumption and voltages in real-time.

With all that said, let’s now take a look at the best mining power supplies you can get in 2021. Some of them which we are about to show you are better optimized for heavy-duty workloads, while some of them are even well-suited for high-end gaming PCs.

Check out the rest of our mining reviews including hashrates and overclocks here.

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