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45575 Dulles Eastern Plz
Ste 188
Sterling, VA 20166
Opens at 10 am
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Everything for Back to School — and then someShop now

Skip to contentGo to Product Search
Sterling
45575 Dulles Eastern Plz
Ste 188
Sterling, VA 20166
Opens at 10 am
Find Another Store
Main Content
Best Buy

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computer cards & components

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power supplies

Small Power Supply

A power supply is an electrical component that supplies electrical power to a load. It is one of the most important parts of a computer, as it provides the energy needed to run all of the components in the computer. Browse the top-ranked list of small power supplies below along with associated reviews and opinions. 

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  1. Thermaltake - Toughpower SFX 850W 80Plus Platinum ATX 3.1 Standard Power Supply - Black

    SKU: J39ZPC9VTH

    Product Description

    A fully modular black power supply featuring 80 PLUS Platinum efficiency and ATX 3.1 compatibility.
    See all Power Supplies
    Your price for this item is $179.99

  2. HP - Desktop Mini 65w Power Supply Kit - 65 W - 120 V AC, 230 V AC Input - 1 - Black

    SKU: J3ZT6F9TRY

    I ordered one from Best Buy. Now I can use my Computer again!

    Product Description

    A black power supply kit compatible with select HP Desktop Mini models, supporting 65W output and dual voltage input.
    See all Laptop Chargers & Adapters
    Your price for this item is $39.99
    Save $20
    The previous price was $59.99

  3. HQRP - Mini UPS Battery Backup 12V 2A 5400mAh for WiFi Router/Modem, CCTV, DVR, LED - White

    SKU: J3ZSLCZ9TT

    Product Description

    A compact white mini UPS delivers 12V 2A backup power for routers, modems, CCTV, and LEDs.
    See all Battery Backup (UPS)
    Your price for this item is $23.95

  4. Blackstar - PSU1 Power Supply Unit for FLY 3 Amplifier

    SKU: J366WFHX9J

    Product Description

    A compact black power supply unit delivering 6.5V DC at 1500mA for reliable amplifier performance.
    See all Bluetooth & Wireless Speaker Accessories
    Your price for this item is $49.99

  5. Super Flower - SFX (Small Form Factor) Combat SFX FP 850W 80+ Platinum, Full Modular, ATX 3.1&PCIe 5.1, W/12V-2x6, SFX Power Supply - Black

    SKU: C34528PQZR

    Product Description

    A fully modular black SFX power supply with 850W, 80+ Platinum efficiency, and PCIe 5.1 support.
    See all Power Supplies
    Your price for this item is $139.99

  6. Super Flower - SFX (Small Form Factor) Combat SFX FP 1000W 80+ Platinum, Full Modular, ATX 3.1&PCIe 5.1, W/12V-2x6, SFX Power Supply - Black

    SKU: C34528PQZ4

    Product Description

    A fully modular black SFX power supply with 1000W output, 80+ Platinum efficiency, and PCIe 5.1 support.
    See all Power Supplies
    Your price for this item is $159.99

  7. Super Flower - SFX (Small Form Factor) Combat SFX FG 850W 80+ Gold, Full Modular, ATX 3.1&PCIe 5.1, W/12V-2x6, SFX Power Supply - Black

    SKU: C34528PQK5

    Product Description

    A fully modular black SFX power supply with 850W output, 80+ Gold efficiency, and PCIe 5.1 support.
    See all Power Supplies
    Your price for this item is $109.99
    Save $30
    The previous price was $139.99

  8. Super Flower - SFX (Small Form Factor) Combat SFX FG 750W 80+ Gold, Full Modular, ATX 3.1&PCIe 5.1, W/12V-2x6, SFX Power Supply - Black

    SKU: C34528PQKQ

    Product Description

    A fully modular black SFX power supply with 750W output, 80+ Gold efficiency, and PCIe 5.1 support.
    See all Power Supplies
    Your price for this item is $99.99

  9. Pyramid - PSV500 Universal Compact 50 Amp Adjustable 12 to 15 Volts Output Home Bench Power Converter Supply - Black

    SKU: J36C98YPTJ

    Product Description

    A compact black power supply delivering adjustable 12–15V output and up to 50 amps for demanding electronics.
    See all Portable Chargers & Power Banks
    Your price for this item is $129.99

  10. Thermaltake - Toughpower SFX 750W 80Plus Platinum ATX 3.1 Standard Power Supply - Black

    SKU: J39ZPC9V6V

    Great product

    Product Description

    A fully modular black power supply featuring 80 PLUS Platinum efficiency and ATX 3.1 compatibility.
    See all Power Supplies
    Your price for this item is $169.99
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