Power Supplies under $300

4 power supplies under $300 from SilverStone, ASUS, Corsair and more. Prices run $215 to $297.

EVGASpec score 8.0

850 Watts, Gold, Semi-modular

+Delivers 850 watts for high-power builds

+Semi-modular design keeps some cables permanently attached

+Includes EVGA ECO Mode

−Semi-modular design offers fewer cable removal options than fully modular units

$289.29

as of 11/04/2026 22:50 PST - Details

CorsairSpec score 8.9

1000 Watts, Gold, 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

$223.70

as of 11/04/2026 22:25 PST - Details

SeasonicSpec score 8.8

750 Watts, Gold, SFX, Fully modular

+750W output in a compact SFX form factor

+Fully modular cable design

+Fits small form factor builds

$215.00

as of 11/04/2026 07:07 PST - Details

XPGSpec score 8.1

1000 Watts, Gold, ATX 3.0

+1000W output for high-performance builds

+80 PLUS Gold efficiency certification

+ATX 3.0 standard compatibility

$297.58

as of 11/04/2026 19:06 PST - Details

Compare specs

Watts	Efficiency	Form	Modular	ATX version	Spec score	Price
850	Gold		Semi-modular		8.0	$289.29 as of 11/04/2026 22:50 PST - Details
1000	Gold	ATX	Fully modular	ATX 3.1	8.9	$223.70 as of 11/04/2026 22:25 PST - Details
750	Gold	SFX	Fully modular		8.8	$215.00 as of 11/04/2026 07:07 PST - Details
1000	Gold			ATX 3.0	8.1	$297.58 as of 11/04/2026 19:06 PST - Details

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