850W Power Supplies

5 850W power supplies from Thermaltake, Corsair, MSI and more. Prices run $120 to $217.

CorsairSpec score 9.5

850 Watts, Platinum, SFX, Fully modular

+850W output for higher-power builds

+Fully modular cable design

+Compact SFX form factor for small cases

$173.85-23%List: ~~$224.99~~

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

SilverStoneSpec score 8.7

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

MSISpec score 9.5

850 Watts, Platinum, ATX, Fully modular

+Platinum: the highest efficiency of the 47 here

+850 watts: the most watts of the 47 here

$119.99-25%List: ~~$159.99~~

as of 11/04/2026 00:18 PST - Details

be quiet!Spec score 9.5

850 Watts, Platinum, ATX, Fully modular

+Platinum: the highest efficiency of the 47 here

+850 watts: the most watts of the 47 here

$129.90-28%List: ~~$179.90~~

as of 11/04/2026 13:06 PST - Details

ASUSSpec score 9.5

850 Watts, Platinum, SFX, Fully modular

+Platinum: the highest efficiency of the 47 here

+850 watts: the most watts of the 47 here

No price recorded yet.

Compare specs

Watts	Efficiency	Form	Modular	ATX version	Spec score	Price
850	Platinum	SFX	Fully modular	ATX 3.0	9.5	$173.85 as of 11/04/2026 13:10 PST - Details
850	Platinum	SFX		ATX 3.0	8.7	$217.99 as of 11/04/2026 07:08 PST - Details
850	Platinum	ATX	Fully modular	ATX 3.1	9.5	$119.99 as of 11/04/2026 00:18 PST - Details
850	Platinum	ATX	Fully modular	ATX 3.1	9.5	$129.90 as of 11/04/2026 13:06 PST - Details
850	Platinum	SFX	Fully modular	ATX 3.0	9.5	No current price

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