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ATX 3.1 Power Supplies

All Power Supplies

5 ATX 3.1 power supplies from Corsair, MSI, ASUS and more. Prices run $45 to $59.

All filtersFilters (2)×
Watts: 650  ×ATX version: ATX 3.1  ×Clear all
BrandRosewill2ASRock1FSP1MSI1
Watts100046850207509650513003120021050115001
EfficiencyBronze2Gold2Platinum1
FormATX5
ModularNon-modular2Semi-modular1
ATX versionATX 3.15
12V-2x6 GPU power12V-2x6 GPU power2
PriceUnder $503Under $754Under $1004Under $1501
Clear allShow 5 Power Supplies
Watts: 650  ×ATX version: ATX 3.1  ×5 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
RosewillSpec score 7.9

650 Watts, Gold, ATX, Non-modular

+650W output for mid-range builds
+ATX 3.1 compatible for current PC standards
+Includes a 16-pin PCIe 5.1 GPU connector
−Non-modular design means all cables are fixed
$47.97-20%List: $59.99
as of 11/04/2026 07:06 PST - Details
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
FSPSpec score 8.0

650 Watts, Platinum, ATX, ATX 3.1

+Flex ATX form factor suits small form factor builds
+650W output suits mid-range builds
+Supports the ATX 3.1 standard
−Flex ATX size limits compatibility with standard ATX cases
No price recorded yet.
MSISpec score 7.9

650 Watts, Gold, ATX, Non-modular

+650W output suits mid-range builds
+ATX 3.1 standard for current PC builds
+Active PFC listed
−Non-modular cabling leaves all cables permanently attached
$59.99
as of 11/04/2026 00:18 PST - Details

Compare specs

power supplyWattsEfficiencyFormModularATX versionSpec scorePrice
650GoldATXNon-modularATX 3.17.9$47.97
as of 11/04/2026 07:06 PST - Details
650BronzeATXSemi-modularATX 3.17.5$49.96
as of 11/04/2026 07:06 PST - Details
650BronzeATXATX 3.17.5$44.99
as of 11/04/2026 12:09 PST - Details
650PlatinumATXATX 3.18.0No current price
650GoldATXNon-modularATX 3.17.9$59.99
as of 11/04/2026 00:18 PST - Details

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.