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Power Supplies under $100

All Power Supplies

2 power supplies under $100 from Rosewill, Thermaltake, MSI and more. Prices run $79 to $90.

All filtersFilters (2)×
Form: SFX  ×Price: Under $100  ×Clear all
BrandSilverStone2
Watts30014501
EfficiencyBronze2
FormATX23SFX2
PriceUnder $1002Under $1502$50 & above2$75 & above2
Clear allShow 2 Power Supplies
Form: SFX  ×Price: Under $100  ×2 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
SilverStoneSpec score 7.5

300 Watts, Bronze, SFX

−300 watts: 29 of the 31 here have more watts
$78.99
as of 11/04/2026 07:08 PST - Details
SilverStoneSpec score 7.6

450 Watts, Bronze, SFX

+Compact SFX form factor suits small form factor builds
+450W output for light to mid-range compact systems
+80 Plus Bronze rated for efficiency
−SFX size may not fit standard ATX cases without an adapter
$90.84
as of 11/04/2026 07:08 PST - Details

Compare specs

power supplyWattsEfficiencyFormModularATX versionSpec scorePrice
300BronzeSFX7.5$78.99
as of 11/04/2026 07:08 PST - Details
450BronzeSFX7.6$90.84
as of 11/04/2026 07:08 PST - Details

Before you buy

Other price ranges

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Popular filters

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