When you buy through our links, we may earn a commission. Learn more ›
Wiki Shopping

Power Supplies under $100

All Power Supplies

14 power supplies under $100 from Rosewill, Thermaltake, MSI and more. Most cost $48 to $98, and half cost less than $85.

be quiet!Spec score 9.3

750 Watts, Platinum, ATX, Fully modular

+Platinum: the highest efficiency of the 26 here
+Fully modular: only 13 of 32 here have one
$99.90-38%List: $159.90
as of 11/04/2026 13:06 PST - Details
ThermaltakeSpec score 8.3

750 Watts, Gold, ATX, ATX 3.1

+Gold: only 2 of 26 here have a higher efficiency
+750 watts: 17 of the 31 here have fewer watts
$74.99-25%List: $99.99
as of 11/04/2026 08:06 PST - Details
RosewillSpec score 8.2

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
MSISpec score 9.1

750 Watts, Gold, ATX, Fully modular

+750W output suits mid-range to high-end builds
+Fully modular cabling reduces loose cables
+16-pin GPU connector included
$89.99-18%List: $109.99
as of 11/04/2026 00:18 PST - Details
RosewillSpec score 7.8

650 Watts, Bronze, ATX, Semi-modular

−Bronze: 19 of the 26 here have a higher efficiency
$49.96-17%List: $59.99
as of 11/04/2026 07:06 PST - Details
RosewillSpec score 9.3

1000 Watts, Gold, ATX, Fully modular

+1000W output for high-end multi-GPU builds
+Fully modular cable design
+Includes 16-pin PCIe 5.1 12V-2x6 connector
$94.99-14%List: $109.99
as of 11/04/2026 07:06 PST - Details
MontechSpec score 9.1

750 Watts, Gold, ATX, Fully modular

+Gold: only 2 of 26 here have a higher efficiency
+Fully modular: only 13 of 32 here have one
$72.90-9%List: $79.90
as of 11/04/2026 00:16 PST - Details
XPGSpec score 9.2

850 Watts, Gold, Fully modular, ATX 3.1

+850W output for high-end graphics cards
+Fully modular cable design
+ATX 3.1 compatible design
$89.99-25%List: $119.99
as of 11/04/2026 09:06 PST - Details
RaijintekSpec score 8.3

850 Watts, Gold, ATX, Non-modular

+850W output for mid-to-high power builds
+ATX 3.1 standard with PCIe 5.1 support
+16-pin connector for modern graphics cards
−Non-modular cabling leaves all cables permanently attached
$79.99
as of 11/04/2026 00:48 PST - Details
MSISpec score 8.2

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
ASRockSpec score 7.8

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
EnermaxSpec score 9.2

850 Watts, Gold, ATX, Fully modular

+Fully modular cabling for cleaner builds
+Includes 16-pin GPU connector for modern graphics cards
+ATX 3.1 standard for current PC builds
$95.49
as of 11/04/2026 14:08 PST - Details
RosewillSpec score 9.2

850 Watts, Gold, ATX, Fully modular

+850W output for high-power gaming and workstation builds
+Fully modular cable design
+Includes 16-pin PCIe 5.0 12V-2x6 connector
$98.90
as of 11/04/2026 07:06 PST - Details
be quiet!Spec score 8.3

850 Watts, Gold, ATX, ATX 3.1

+850 watts: only 2 of 31 here have more watts
+Gold: only 2 of 26 here have a higher efficiency
$89.90
as of 11/04/2026 13:06 PST - Details

Compare specs

power supplyWattsEfficiencyFormModularATX versionSpec scorePrice
750PlatinumATXFully modularATX 3.19.3$99.90
as of 11/04/2026 13:06 PST - Details
750GoldATXATX 3.18.3$74.99
as of 11/04/2026 08:06 PST - Details
650GoldATXNon-modularATX 3.18.2$47.97
as of 11/04/2026 07:06 PST - Details
750GoldATXFully modularATX 3.19.1$89.99
as of 11/04/2026 00:18 PST - Details
650BronzeATXSemi-modularATX 3.17.8$49.96
as of 11/04/2026 07:06 PST - Details
1000GoldATXFully modularATX 3.19.3$94.99
as of 11/04/2026 07:06 PST - Details
750GoldATXFully modularATX 3.19.1$72.90
as of 11/04/2026 00:16 PST - Details
850GoldFully modularATX 3.19.2$89.99
as of 11/04/2026 09:06 PST - Details
850GoldATXNon-modularATX 3.18.3$79.99
as of 11/04/2026 00:48 PST - Details
650GoldATXNon-modularATX 3.18.2$59.99
as of 11/04/2026 00:18 PST - Details

Before you buy

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