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Small Computer Power Supplies

A computer power supply unit is a component that converts AC power from your wall socket into the stable, consistent DC power that your computer's components need to work. If you're building a new computer or upgrading an old one, you'll want to make sure you get the right power supply unit for your needs. Browse the top-ranked list of small computer power supplies below along with associated reviews and opinions.

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  1. CORSAIR - CX-M Series CX650M Semi-Modular Low-Noise ATX 3.1 Power Supply - Black

    SKU: J39TSCHZ22

    Product Description

    A semi-modular black ATX power supply with low-noise operation, Cybenetics Bronze efficiency, and PCIe 5.1 support.
    See all Power Supplies
    Your price for this item is $89.99

  2. CORSAIR - CX-M Series CX650M Semi-Modular Low-Noise ATX Power Supply - Black

    SKU: J39QHHFSS2

    Product Description

    A black semi-modular ATX power supply offering low-noise operation, 80 PLUS Bronze efficiency, and reliable performance.
    See all Power Supplies
    Your price for this item is $113.80

  3. CORSAIR - RMe Series RM750e 80 PLUS Gold Fully Modular Low-Noise ATX 3.1 and PCIE 5.1 Power Supply - White

    SKU: J39QHTCVCY

    Love love love, it’s pretty and white and the power is unmatched...Fixed my Power Issues

    Product Description

    A fully modular, low-noise white power supply with Cybenetics Gold efficiency and ATX 3.1 compliance.
    See all Power Supplies
    Your price for this item is $99.99
    Save $25
    The previous price was $124.99

  4. In Win - CE685.FH300TB3 Black Micro ATX Case with 300W TFX PSU - Black

    SKU: J3PHGRZ5TW

    Product Description

    A black steel micro ATX mini tower case featuring a 300W TFX PSU, headphone jack, and microphone input.
    See all Computer Cases
    Your price for this item is $127.49

  5. CORSAIR - RMX Series RM1000x Cybenetics Gold Fully Modular ATX Power Supply - Black

    SKU: J39QHTJWGF

    Product Description

    A fully modular black ATX power supply offering Cybenetics Gold efficiency and ultra-quiet 140mm fan.
    See all Power Supplies
    Your price for this item is $209.99

  6. CORSAIR - RMe Series RM850e 80 PLUS Gold Fully Modular Low-Noise ATX 3.1 and PCIE 5.1 Power Supply - White

    SKU: J39QHTCVPR

    Works great and is able to power my pc without any issues....Amazing Power Supply

    Product Description

    A fully modular white power supply offering low-noise operation, 80 PLUS Gold efficiency, and ATX 3.1 compatibility.
    See all Power Supplies
    Your price for this item is $134.99
    Save $20
    The previous price was $154.99

  7. CORSAIR - RMe Series RM750e 80 PLUS Gold Fully Modular Low-Noise ATX 3.1 and PCIE 5.1 Power Supply - Black

    SKU: J39QHT23ZX

    Ultra Quiet Power Supply!...The price at the time of purchase (early 2025) is great compared to other similar power supplies....Great and easy to use power supply. I love Corsair and their power supplies...

    Product Description

    A fully modular black power supply offering low-noise operation, 80 PLUS Gold efficiency, and ATX 3.1 compatibility.
    See all Power Supplies
    Your price for this item is $89.99
    Save $25
    The previous price was $114.99

  8. CORSAIR - RMe Series RM1000e 80 PLUS Gold Fully Modular Low-Noise ATX 3.1 and PCIE 5.1 Power Supply - Black

    SKU: J39QHT28XQ

    Product Description

    A fully modular black power supply offering low-noise operation, Cybenetics Gold efficiency, and ATX 3.1 compatibility.
    See all Power Supplies
    Your price for this item is $147.99
    Save $42
    The previous price was $189.99

  9. Pyramid - Universal Compact Bench Power Supply - 12 Amp Linear Regulated Home Lab Benchtop AC-to-DC 12V Converter - Black

    SKU: J7SGX3J5H9

    Product Description

    A compact black AC-to-DC converter delivering 12V, 12A linear regulated power for precise electronics work.
    See all Portable Chargers & Power Banks
    Your price for this item is $68.99

  10. In Win - EFS052.CH450TB3 Black Mini Tower Computer Case MicroATX 12V Form Factor, PSII Size Power Supply - Black

    SKU: J3PHGR4JWQ

    Product Description

    A black steel mini tower case with MicroATX support, headphone jack, microphone input, and USB ports.
    See all Computer Cases
    Your price for this item is $124.49
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