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Power Supplies under $400

All Power Supplies

6 power supplies under $400. Most cost $325 to $399, and half cost less than $347.

All filtersFilters×
BrandCorsair3be quiet!1EVGA1MSI1XPG1
Watts1000412001130017501
EfficiencyPlatinum4Gold1Titanium1
Clear allShow 6 Power Supplies
6 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
MSISpec score 9.5

1300 Watts, Titanium, ATX, Fully modular

+1300W output for very high-power systems
+Fully modular cables reduce cable clutter
+Dual 12V-2x6 cables for high-power GPUs
−Higher wattage than most desktop builds need
$399.97
as of 11/04/2026 00:18 PST - Details
CorsairSpec score 9.3

1200 Watts, Platinum, Fully modular

+Rated at 1200 watts for high-power multi-GPU builds
+80 Plus Platinum certified for high efficiency
+Fully modular cables reduce clutter inside the case
$325.00
as of 11/04/2026 13:10 PST - Details
CorsairSpec score 9.2

1000 Watts, Platinum, 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
$339.00
as of 11/04/2026 13:10 PST - Details
EVGASpec score 9.2

1000 Watts, Platinum, Fully modular

+1000 watts for high-power systems
+Fully modular cabling for cleaner builds
+Includes ECO Mode for quieter low-load operation
$399.99
as of 11/04/2026 14:09 PST - Details
XPGSpec score 8.2

1000 Watts, Gold, ATX 3.0

+1000W output for high-performance builds
+80 PLUS Gold efficiency certification
+ATX 3.0 standard compatibility
$300.27
as of 11/04/2026 00:46 PST - Details
be quiet!

750 Watts, ATX

+Provides 750 watts in standard ATX form factor
+Fits common ATX desktop cases
+Uses a 20+4 pin ATX connector
$355.40
as of 11/04/2026 13:06 PST - Details

Compare specs

power supplyWattsEfficiencyModularSpec scorePrice
1300TitaniumFully modular9.5$399.97
as of 11/04/2026 00:18 PST - Details
1200PlatinumFully modular9.3$325.00
as of 11/04/2026 13:10 PST - Details
1000PlatinumFully modular9.2$339.00
as of 11/04/2026 13:10 PST - Details
1000PlatinumFully modular9.2$399.99
as of 11/04/2026 14:09 PST - Details
1000Gold8.2$300.27
as of 11/04/2026 00:46 PST - Details
750n/a$355.40
as of 11/04/2026 13:06 PST - Details

Before you buy

Other price ranges

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Popular filters

Fully Modular Power Supplies97ATX Power Supplies95ATX 3.1 Power Supplies88Power Supplies with 12V-2x6 GPU Power8580 Plus Gold Power Supplies76Power Supplies under $15068Power Supplies under $200641000W Power Supplies61

Power Supplies by use

Power Supply for a Gaming PC121

Related product types

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