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Power Supplies under $300

All Power Supplies

11 power supplies under $300 from SilverStone, ASUS, Corsair and more. Most cost $221 to $279, and half cost less than $260.

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
be quiet!Spec score 9.3

1500 Watts, Platinum, ATX, Fully modular

+1500W output for high-power systems
+Fully modular cabling reduces cable clutter
+Native 12V-2x6 cable for 16-pin GPUs
−Large 1500W capacity may exceed needs of typical builds
$279.89
as of 11/04/2026 21:57 PST - Details
ASUSSpec score 9.1

1000 Watts, Platinum, SFX, Fully modular

+1000W output in a compact SFX form factor
+Fully modular cabling
+ATX 3.1 with PCIe 5.1 support
−SFX-L size fits only compatible small-form-factor cases
$279.99
as of 11/04/2026 21:50 PST - Details
ASUSSpec score 9.1

1000 Watts, Platinum, ATX, Fully modular

+1000W output for high-wattage builds
+Fully modular cabling
+Includes a 12V-2x6 GPU cable
$259.99
as of 11/04/2026 21:50 PST - Details
SeasonicSpec score 9.1

1000 Watts, Platinum, ATX, Fully modular

+1000W output for high-end multi-GPU builds
+Fully modular cable design
+ATX 3.1 compatible
$269.99
as of 11/04/2026 07:07 PST - Details
PowerLotSpec score 9.4

1300 Watts, Titanium, ATX, Fully modular

+1300W output for high-power gaming and workstation builds
+Fully modular cabling reduces cable clutter
+Native 12V-2x6 connector for modern graphics cards
−Higher wattage than most standard builds need
$299.99
as of 11/04/2026 19:06 PST - Details
Cooler MasterSpec score 9.2

1300 Watts, Platinum, ATX, Fully modular

+1300W output for high-power builds
+Fully modular cabling reduces cable clutter
+16-pin GPU connector support
$249.99
as of 11/04/2026 22:23 PST - Details
FSPSpec score 9.2

1000 Watts, Titanium, ATX, Fully modular

+1000W output for high-power gaming and workstation builds
+Fully modular cables reduce clutter inside the case
+Native 16-pin GPU connector for current graphics cards
$259.99
as of 11/04/2026 14:11 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
SilverStoneSpec score 9.1

1000 Watts, Platinum, ATX, Fully modular

+1000W output for demanding systems
+Fully modular cable design
+Includes 16-pin GPU connector
$221.40
as of 11/04/2026 07:08 PST - Details
Chieftec

750 Watts

+750W output for mid-range systems
+Supports 16-pin GPU connector
+Four PCIe connectors for GPUs
$248.90
as of 11/04/2026 22:26 PST - Details

Compare specs

power supplyWattsEfficiencyFormModularATX versionSpec scorePrice
850PlatinumSFXATX 3.08.2$217.99
as of 11/04/2026 07:08 PST - Details
1500PlatinumATXFully modularATX 3.19.3$279.89
as of 11/04/2026 21:57 PST - Details
1000PlatinumSFXFully modularATX 3.19.1$279.99
as of 11/04/2026 21:50 PST - Details
1000PlatinumATXFully modularATX 3.19.1$259.99
as of 11/04/2026 21:50 PST - Details
1000PlatinumATXFully modularATX 3.19.1$269.99
as of 11/04/2026 07:07 PST - Details
1300TitaniumATXFully modularATX 3.19.4$299.99
as of 11/04/2026 19:06 PST - Details
1300PlatinumATXFully modularATX 3.19.2$249.99
as of 11/04/2026 22:23 PST - Details
1000TitaniumATXFully modularATX 3.19.2$259.99
as of 11/04/2026 14:11 PST - Details
1000GoldATXFully modularATX 3.18.9$223.70
as of 11/04/2026 22:25 PST - Details
1000PlatinumATXFully modularATX 3.19.1$221.40
as of 11/04/2026 07:08 PST - Details

Before you buy

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