Power Supplies under $300

2 power supplies under $300 from SilverStone, ASUS, Corsair and more. Prices run $218 to $297.

SilverStoneSpec score 8.2

850 Watts, Platinum, SFX, ATX 3.0

+Compact SFX form factor for small builds

+850W output for high-end systems

+Includes 16-pin GPU connector

$217.99-7%Was: ~~$233.99~~

as of 11/04/2026 07:08 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

power supply	Watts	Efficiency	Form	Modular	ATX version	Spec score	Price
	850	Platinum	SFX		ATX 3.0	8.2	$217.99 as of 11/04/2026 07:08 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.