Power Supplies under $400

3 power supplies under $400. Prices run $325 to $399.

CorsairSpec score 9.3

1200 Watts, Platinum, Fully modular

+Rated at 1200 watts for high-power multi-GPU builds

+80 Plus Platinum certified for high efficiency

+Fully modular cables reduce clutter inside the case

$325.00

as of 11/04/2026 13:10 PST - Details

CorsairSpec score 9.2

1000 Watts, Platinum, ATX, Fully modular

+1000 watt output for high-power systems

+ATX 3.1 standard supports newer GPUs

+16-pin GPU connector for modern graphics cards

$339.00

as of 11/04/2026 13:10 PST - Details

EVGASpec score 9.2

1000 Watts, Platinum, Fully modular

+1000 watts for high-power systems

+Fully modular cabling for cleaner builds

+Includes ECO Mode for quieter low-load operation

$399.99

as of 11/04/2026 14:09 PST - Details

Compare specs

Watts	Efficiency	Form	Modular	ATX version	Spec score	Price
1200	Platinum		Fully modular		9.3	$325.00 as of 11/04/2026 13:10 PST - Details
1000	Platinum	ATX	Fully modular	ATX 3.1	9.2	$339.00 as of 11/04/2026 13:10 PST - Details
1000	Platinum		Fully modular		9.2	$399.99 as of 11/04/2026 14:09 PST - Details

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.