Power Supplies - Showing 1 - 24 of 2826 Products

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CORSAIR CX-M CX650M 650 W ATX12V / EPS12V 80 PLUS BRONZE Certified Semi-Modular ...
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Thermaltake Smart Series 500W SLI/CrossFire Ready Continuous Power ATX 12V V2.3 / EPS ...
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CORSAIR RMx Series (2021) RM1000x CP-9020201-NA 1000 W ATX12V / EPS12V SLI Ready ...
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Thermaltake Toughpower GF A3 ATX 3.0 850W 80+ Gold Full Modular SLI/Crossfile Ready ...
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be quiet! Pure Power 12 M 850W ATX 3.0 Power Supply | 80+ Gold Efficiency | PCIe 5.0 | 2 ...
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CORSAIR CX-M CX750M 750 W ATX 80 PLUS BRONZE Certified Semi-Modular Power Supply
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ENERMAX REVOLUTION D.F. 2 1200W Full Modular, 80 Plus Gold, ATX 3.0 & PCIe 5.0 Ready, ...
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CORSAIR RMx Shift Series RM1000x Shift Fully Modular 80PLUS Gold ATX Power Supply
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Thermaltake GF1 (2024) Fully Modular ATX 750W Power Supply - 80 PLUS Gold - Ultra Quiet - ...
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Thermaltake Toughpower GF A3 ATX 3.0 1050W 80+ Gold Full Modular SLI/Crossfile Ready ...
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Thermaltake Toughpower GF A3 650W 80+ Gold Full Modular SLI/Crossfile Ready ATX 3.0 ...
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CORSAIR RMx Series (2021) RM850x CP-9020200-NA 850 W ATX12V / EPS12V 80 PLUS GOLD ...
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be quiet! Straight Power 12 850W ATX 3.0 Power Supply | 80+ Platinum Efficiency | PCIe 5.0 | ...
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ASUS TUF Gaming 1000W Gold (1000 Watt, ATX 3.0 Compatible Fully Modular Power Supply, ...
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CORSAIR RMx Shift Series RM850x Shift Fully Modular 80PLUS Gold ATX Power Supply
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ENERMAX Revolution D.F. 750W 80 Plus Gold 750W, Full Modular, Multi Rail, 7 Year Warranty, ...
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MSI - MPG A1000G PCIE 5.0, 80 GOLD Full Modular Gaming PSU, 12VHPWR Cable, 4080 4090 ...
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be quiet! Pure Power 12 M 1000W ATX 3.0 Power Supply | 80+ Gold Efficiency | PCIe 5.0 ...
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Thermaltake Toughpower GF A3 Snow Edition 1050W 80+ Gold Full Modular SLI/Crossfire ...
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CORSAIR RMx Shift Series RM1200x Shift Fully Modular 80PLUS Gold ATX Power Supply
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Seasonic FOCUS GX-1000, 1000W 80+ Gold, Full-Modular, Fan Control in Fanless, Silent, and ...
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ASUS TUF Gaming 850W Gold (850 Watt, ATX 3.0 Compatible, Fully Modular Power Supply, ...
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Thermaltake Toughpower GF3 750W, ATX 3.0 Standard, PCIe Gen.5 300W 12VHPWR ...
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ENERMAX Revolution D.F. X 850W Full Modular, 80 Plus Gold, ATX 3.0 & PCIe 5.0 Ready, Native ...
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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.