Power Supplies - Showing 1 - 24 of 15520 Products

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CORSAIR TX-M Series TX550M (CP-9020133-NA) 550W Power Supply
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CORSAIR CX-M Series CX550M 550W 80 PLUS BRONZE Haswell Ready ATX12V & EPS12V Semi-Modular Power Supply
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CORSAIR CX-M Series CX450M 450W 80 PLUS BRONZE Haswell Ready ATX12V & EPS12V Semi-modular Power Supply
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Rosewill Glacier Series 700W Modular Gaming Power Supply with Silent Aero-Diversion Fan, 80 PLUS Bronze Certified, Single +12V Rail, Intel 4th Gen CPU Ready, SLI & Crossfire Ready - Glacier-700M
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EVGA 750 GQ 210-GQ-0750-V1 750W Power Supply
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CORSAIR RMx Series RM750x CP-9020179-NA 750W Power Supply
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CORSAIR CX series CX650 650W Power Supply
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CORSAIR VS Series, VS650, 650 Watt (650W), Active PFC, 80 PLUS White Certified Power Supply
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CORSAIR VS Series VS450 CP-9020170-NA 450W Power Supply
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CORSAIR RMx Series RM650x 2018 CP-9020178-NA 650W Power Supply
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CORSAIR CX series CX450 450W Power Supply
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SeaSonic M12II M12II 620 Bronze 620W Power Supply
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CORSAIR RMx Series RM850x CP-9020180-NA 850W Power Supply
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SeaSonic M12II 520 Bronze EVO Edition 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply
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RAIDMAX XT Series RX-500XT 500W Power Supply
$39.99
$39.99
EVGA SuperNOVA 850 G2 220-G2-0850-XR 850W Power Supply
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CORSAIR CX Series CX550 550W Power Supply
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EVGA SuperNOVA 750 G3 220-G3-0750-X1 750W Power Supply
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CORSAIR VS Series, VS550, 550 Watt (550W), Active PFC, 80 PLUS White Certified Power Supply
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Seasonic FOCUS Plus Series SSR-750FX 750W 80+ Gold ATX12V & EPS12V Full Modular 120mm FDB Fan Compact 140 mm Size Power Supply
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CORSAIR RMx Series RM550x CP-9020177-NA 550W Power Supply
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$99.99
$89.99
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CORSAIR CX series CX650M (CP-9020103-NA) 650W Power Supply
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EVGA 650 GQ 210-GQ-0650-V1 80+ GOLD 650W Modular EVGA ECO Mode Power Supply
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EVGA 500 BR 100-BR-0500-K1 500W Power Supply
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Tips for Buying a Computer Power Supply Unit (PSU)

Introduction

A computer power supply is one of the most crucial components in a computer, as it is responsible for providing stable and regulated power for the system. If you are shopping for a computer power supply, finding the ideal one will require you to consider several important criteria. Those criteria include the size and form factor of the case, the wattage requirement of the system, efficiency, and your internal cabling preference.

Size Standards

Computer power supplies are available in a variety of different sizes and form factors. It is crucial that the power supply unit (PSU) you select matches the size requirements of your case and motherboard. If you have a Mini ITX case for example, you cannot utilize a standard ATX power supply. For more information about power supply form factors, see below.

  • ATX
    The standard power supply size that will fit most mid-size and full-size tower cases. Some micro ATX cases can utilize ATX power supplies as well.
  • Mini ITX
    Mini ITX power supplies are designed specifically for mini ITX systems but may also fit other small form factor computer cases.
  • SFX
    SFX computer power supplies are smaller than standard ATX PSUs and are meant for micro ATX and other small form factor computer cases.
  • TFX
    Another small form factor computer power supply that is thinner to fit micro ATX, Mini ITX, and other smaller systems.
Wattage

A computer power supply’s wattage rating is a measurement of how much power it can provide to the hardware. When shopping for a power supply, you need to consider how much power your computer system requires. To calculate your system’s power requirement, add up the power draw for all the components.

Start with the motherboard and processor, and then include graphics cards, system memory, storage devices, and other expansion cards. For an even better estimate, you should include USB devices, internal fans, and other accessories. Once you have your estimate, try to find a computer power supply that is capable of at least that. For a larger safety margin, you should get a PSU that is well above that minimum.

Cable Management

There are two cable management options for computer power supplies, modular and non-modular. Modular cabling allows you to connect and disconnect internal power cables from the power supply itself, so you can avoid having unused cables and connectors dangling inside the case. Computer power supplies that feature modular cabling typically cost more than those without it.

Efficiency

The efficiency of a computer power supply is a ratio of how much power it provides and how much power it draws. For instance, a power supply that provides 200 watts of power but pulls 400 watts from a power outlet has a 200/400 or 50% efficiency ratio. The more efficient your computer power supply is, the less it will cost you to operate.

One metric you can use to gauge efficiency is what level of 80 PLUS® certification a power supply has, if it any. The different levels of 80 PLUS certification include 80 PLUS, 80 PLUS Bronze, 80 PLUS Silver, 80 PLUS Gold, 80 PLUS Platinum, and 80 PLUS Platinum. The most basic certification is 80 PLUS, which indicates an efficiency rating of at least 80%. The other certifications rank from Bronze to Titanium, with the latter being the highest attainable. If computer power supply efficiency is a big concern for you, try to find one with a high level of 80 PLUS certification.