ATX 3.1 Power Supplies

2 ATX 3.1 power supplies from Corsair, MSI, ASUS and more. Prices run $45 to $49.

RosewillSpec score 7.5

650 Watts, Bronze, ATX, Semi-modular

−Bronze: 85 of the 87 here have a higher efficiency

$49.96-17%List: ~~$59.99~~

as of 11/04/2026 07:06 PST - Details

ASRockSpec score 7.5

650 Watts, Bronze, ATX, ATX 3.1

+650W output suits mid-range builds

+80 Plus Bronze certified efficiency

+ATX 3.1 ready for newer hardware

−Not fully modular, so cable management is more limited

$44.99

as of 11/04/2026 12:09 PST - Details

Compare specs

power supply	Watts	Efficiency	Form	Modular	ATX version	Spec score	Price
	650	Bronze	ATX	Semi-modular	ATX 3.1	7.5	$49.96 as of 11/04/2026 07:06 PST - Details
	650	Bronze	ATX		ATX 3.1	7.5	$44.99 as of 11/04/2026 12:09 PST - Details

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