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ATX 3.1 Power Supplies

All Power Supplies

88 ATX 3.1 power supplies from Corsair, MSI, ASUS and more. Most cost $95 to $259, and half cost less than $140.

Top brands: Corsair (15)MSI (10)ASUS (10)

All filtersFilters (1)×
ATX version: ATX 3.1  ×Clear all
BrandCorsair15ASUS10MSI10Cooler Master6Thermaltake6be quiet!5Lian Li5Super Flower5
Show all 22Rosewill4FSP3Seasonic3Enermax2GIGABYTE2Montech2Phanteks2Raijintek2Antec1ASRock1NZXT1PowerLot1SilverStone1XPG1
Watts100046850207509650513003120021050115001
EfficiencyGold51Platinum30Titanium4Bronze2
FormATX81SFX6
ModularFully modular70Non-modular3Semi-modular1
ATX versionATX 3.188
12V-2x6 GPU power12V-2x6 GPU power75
PriceUnder $503Under $754Under $10010Under $15044Under $20048Under $25018Under $30013Under $4002
Show all 12Under $5001$100 & above64$150 & above27$250 & above9
Clear allShow 88 Power Supplies
ATX version: ATX 3.1  ×88 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
be quiet!Spec score 8.9

1000 Watts, Gold, ATX, Fully modular

+1000 watts: only 7 of 87 here have more watts
$139.90
as of 11/04/2026 13:06 PST - Details
AntecSpec score 8.8

850 Watts, Gold, ATX, Fully modular

−850 watts: 53 of the 87 here have more watts
$109.99
as of 11/04/2026 12:08 PST - Details
ASUSSpec score 9.2

1200 Watts, Platinum, ATX, Fully modular

+Platinum: only 4 of 87 here have a higher efficiency
+1200 watts: only 4 of 87 here have more watts
No price recorded yet.
Lian LiSpec score 8.8

850 Watts, Gold, ATX, Fully modular

−850 watts: 53 of the 87 here have more watts
No price recorded yet.

Compare specs

power supplyWattsEfficiencyFormModularATX versionSpec scorePrice
1000GoldATXFully modularATX 3.18.9$139.90
as of 11/04/2026 13:06 PST - Details
850GoldATXFully modularATX 3.18.8$109.99
as of 11/04/2026 12:08 PST - Details
1200PlatinumATXFully modularATX 3.19.2No current price
850GoldATXFully modularATX 3.18.8No current price

Before you buy

Other ATX version options

PC Cases264CPU Coolers393Processors247Data Center GPUs82Graphics Cards371Motherboards640Memory374Storage Drives577Binoculars228Network Cables1,382Cameras2,556Chromebooks196

Popular filters

Fully Modular Power Supplies97ATX Power Supplies95Power Supplies with 12V-2x6 GPU Power8580 Plus Gold Power Supplies76Power Supplies under $15068Power Supplies under $200641000W Power Supplies61850W Power Supplies47

Power Supplies by use

Power Supply for a Gaming PC121

Related product types

ATX 3.0 Power Supplies9

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