Power Supply

The PSU (a.k.a. power supply unit) is virtually the heart of the computer. It is a vitally important part that delivers power to components that comprise the computer system. A high-quality power supply can make the difference between a perfect machine and an unreliable one. Getting to know the importance of the power supply is just the first step, and getting the right PSU for your system means looking beyond just enormous power output.

You need to consider the physical size of the power supply, and whether or not it fits your case's form factor. How many "rails" does it have, and how many peripherals it can connect with. Look at placement of your cables and whether they'll fit into your case, and if you can run them to all the places your PSU must connect. Properly chosen, your power supply will last you a long time!

Bestselling Power Supplies Reviews:

Gage P.

2/13/2026 3:19:56 PM

Good product

“ Adjustable PSU fan speed by knob, or a position on the knob that lets the computer change speed ”

CORSAIR RMx Series RM850x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 850 Watts

Gamer

2/12/2026 8:29:22 AM

Work good

“ I just finished building this PC 4 days ago and I'm satisfied with all the components. ”

MSI MPG A1000GS PCIE5, Fully Modular Gaming 1000W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

William K.

2/11/2026 1:49:37 PM

easy setup

“ Corsair has been an excellent power supply form. ”

CORSAIR RMx Series RM1000x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 1000 Watts

Martin T.

2/6/2026 11:05:52 PM

Works just great

“ While listed as an ATX 3.0, it seems pretty consistent with 3.1 standards. ”

Seasonic VERTEX GX-1200, 1200W 80+ Gold, ATX 3.0 & PCIe 5.0 Ready, Full-Modular, ATX Form Factor, Low Noise, Premium Japanese Capacitor, 12 Year Warranty, Nvidia RTX 40 Super/50 , AMD GPU Compatible

Lucas H.

2/6/2026 9:02:18 AM

Pleasant surprise

“ I purchased this power supply to run an AI system. ”

ASRock Phantom Gaming PG-850G 850W 80 PLUS GOLD & Cybenetics PLATINUM Full Modular Power Supply, ATX3.1 & PCIe5.1 Ready with Dual Color 12V-2x6 Cable, 10 Years Warranty

Alonso A.

1/31/2026 9:43:06 AM

The fist one that got sent to me was doa(dead on arrival)

“ I would deffeinately recommend this power supply to other people very good and even has a fan control option. ”

CORSAIR RMx Series RM1000x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 1000 Watts

Casey B.

1/30/2026 4:48:38 PM

Absolute unit of a power supply

“ Nice sleek white look for any white PC build ”

CORSAIR RM1000e Fully Modular Low-Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - 105°C-Rated Capacitors - Cybenetics Gold Efficiency

asian girl

1/23/2026 1:11:07 PM

Resolved PSU-Side Connector Power Loss

“ With the older unit, the system eventually began losing all power unless sustained lateral pressure was applied to a PSU-side power connector (either the 24-pin ATX or the CPU EPS cable). ”

MSI MPG A1000GS PCIE5, Fully Modular Gaming 1000W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

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Bestselling Power Supplies Reviews: