Cryptocurrency Mining has become extremely popular again lately, with many people looking to optimize their existing GPUs for mining or looking to buy the best GPUs for mining. Some are even wondering how to mine on a Raspberry Pi. No matter what currency you go for, the market is extremely volatile and the costs of electricity and hardware are prohibitive for many people. You could end up losing a lot of money while dramatically expanding your carbon footprint.
But if you’ve made the decision to mine with your PC, you need a powerful and robust power supply to keep the current flowing to your graphics card(s). While we maintain a list of the best PSUs for gaming, the qualities you should look for in a mining power supply are a little different.
What to Look For in the Best Mining Power Supply?
When evaluating power supplies to see whether they are good for mining, consider the following requirements:
- Capacity 2x higher than you need. Ideally, you’ll run at 50 – 60% capacity.
- 80 PLUS Gold or Cybenetics Gold for higher efficiency.
- Lower than 50mV ripple at +12V under full load at increased operating temperatures (40°C).
- Quality fan (FDB or Rifle bearing; ideally, it should use ball or magnetic bearings).
- Enough 6+2 pin PCIe connectors to handle the graphics card(s) that you plan to use. You should not use any adapters, in any case! 4-pin Molex connectors are not meant for high loads.
- Enough 4-pin Molex or SATA connectors for the PCIe riser cards that you will use.
- All cables should use 18AWG wires (lower is better) maximum. For PCIe cables, 16-gauge wires are ideal.
- For 1.4kW (better still, 1kW) and stronger PSUs, a C19 coupler is required. An AC power cord with 14AWG wires should be used. For lower-capacity PSUs, an AC power cord with at least 16AWG wires is required.
- Support the essential protection features (SCP, OPP), including over-temperature protection.
- Over 12ms hold-up time (17ms+ is ideal) and an accurate power-good signal. The power-good signal has to have at least a 1ms delay, dropping at least 1ms before the rails go out of spec.
- Complete EMI filtering stage (minimum components: 4x Y caps, 2x X caps, two CM chokes, an MOV), along with inrush current protection (an NTC thermistor is required, which ideally should be supported by a bypass relay).
- Impeccable build quality, including quality MOSFETs and high-quality bulk/filtering capacitors (105°C rating and a majority of filtering caps on the secondary side must have 4000h lifetime). The use of polymer caps on the secondary side is preferred.
- 15cm distance between peripheral connectors to allow PCIe risers to be installed further away
While it’s not required, it’s good to have a PSU that comes with a minimum one-year warranty that covers 24/7 operation under full load at 30-35°C. That way, if your PSU gives out within the first 12 months, you can recoup your investment.
The most important requirements involve efficiency and build quality. For maximum endurance and…