Best Power Supplies for Mining Rigs (2026)

Sizing and Choosing a Mining Power Supply

The power supply is the heart of a mining rig and the component most likely to cause a fire if you buy badly. It runs at high load continuously, often for years, so efficiency and build quality are not luxuries — they are safety features. Every unit here is 80+ Gold or better, fully modular, and from a manufacturer with a long reliability record.

Sizing is straightforward once you know your rig's draw. Add up the power limit of every GPU, add roughly 100 watts for the motherboard, CPU, and risers, and then size your PSU so that total is no more than about 80 percent of its rating. A rig drawing 1,100 watts wants a 1600W unit, not a 1200W one running on the ragged edge. That headroom keeps the PSU cool, quiet, and efficient.

Efficiency tiers matter over time. An 80+ Platinum unit wastes less power as heat than a Gold one, and on a rig that runs every hour of every day, that difference slowly pays back the higher purchase price while also making your rig run cooler and quieter.

Buying Guide

Single PSU vs. Dual PSU

A single high-wattage PSU is simpler, tidier, and the right answer for rigs up to about six GPUs. Once you push into eight or more cards, a single unit may not have enough PCIe leads or headroom, and a second PSU becomes necessary. The ADD2PSU-style sync board in our list is the safe way to do this: it makes the second supply power on automatically with the first, so you never have components running on unsynced power.

Never simply jam a paperclip into a second PSU's connector to force it on. Sync boards exist for a reason — they sequence the supplies correctly and protect your hardware.

Why Fully Modular Cabling Matters

On a rig you run one dedicated cable per riser and per GPU, and you skip the ones you don't need. Fully modular supplies let you connect only the leads you use, which cuts clutter, improves airflow, and makes troubleshooting a specific card far easier. Every unit here is fully modular for exactly this reason.

Warranty as a Buying Signal

The EVGA SuperNOVA line's 10-year warranty is not just peace of mind; it is a signal of how the manufacturer expects the unit to hold up under sustained load. A long warranty on a PSU is one of the most reliable proxies for build quality you can find.

Frequently Asked Questions

What wattage PSU do I need for a 6-GPU rig?

Most 6-GPU rigs draw between 800 and 1,100 watts depending on the cards and power limits. A quality 1200W unit covers the lighter end and a 1600W unit gives comfortable headroom for power-hungry cards. Aim to load the PSU to no more than about 80 percent.

Can I use a regular gaming PSU for mining?

Yes — every unit here is a standard high-quality ATX PSU, not a mining-specific product. What matters is capacity, efficiency, modular cabling, and a strong warranty. Server PSUs with breakout boards are a cheaper alternative for dense rigs but are louder and less beginner-friendly.

Is it safe to run two power supplies in one rig?

Yes, when you use a sync board like the ADD2PSU to switch them on together. Split your loads so each GPU and its riser draw from the same supply, keep the boards' grounds common, and never force a PSU on manually.

Keep Building

A stable rig is a system, not a single part. Once you have this piece sorted, work through the rest of the build: GPU Rig Frames PCIe Risers Motherboards.