Power Supplies - Showing 265 - 288 of 11992 Products

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ASUS ROG Thor 1200W Platinum III PSU (80 PLUS Platinum Certified, ATX 3.1, GaN MOSFET, ...
$479 .57
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ASUS ROG Loki SFX-L 1200W Titanium PSU (Fully Modular Power Supply, 80+ Titanium, ...
$335 .99
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Corsair SF Series (2024) SF850, 80 PLUS Platinum, Fully Modular SFX Power Supply, ...
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$229.99
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Corsair SF Series (2024) SF750, 80 PLUS Platinum, Fully Modular SFX Power Supply, ...
$164 .99
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CORSAIR HX1200i (2025) Fully Modular Ultra-Low Noise ATX Power Supply with 12V-2x6 ...
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$353.99
$308 .99
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Corsair SF Series (2024) SF1000, 80 PLUS Platinum, Fully Modular SFX Power Supply, ...
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$275.99
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CORSAIR HX1500i (2025) Fully Modular Ultra-Low Noise ATX Power Supply with 12V-2x6 ...
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$403.99
$363 .99
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b-Vigor 550W ATX Power Supply
$42 .99
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Rosewill VNW 550W 80+ White Certified, Non-Modular Active PFC Design, Low-Noise Power ...
$45 .99
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Montech TITAN PLA 1200 1200 W ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular ...
$229 .00
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EPower Power Supply EP-400PM 400W ATX/EPS 12V 120mm Fan 2xSATA
$38 .99
MSI MPG Ai1600TS PCIE5, Fully Modular Gaming 1600W Power Supply, 80+ Titanium, Dual ...
$499 .99
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SilverStone Technology HELA 750R Platinum 80 PLUS Platinum 750W PCIe 5 Fully Modular ...
$157 .99
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Lian Li SP Platinum 850W SFX Form Factor Power Supply with 12V-2x6 Connectors - ATX 3.1 & ...
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$164.99
$150 .99
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SilverStone 1000W, ATX, single +12V rails with 83A output, Silent 120mmFan with 18dBA, ...
$179 .99
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EPower Technology EP-600PM 600W Atx12V 2.3 Single 120Mm Cooling Fan Bare
$58 .99
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POWER SUPPLY/CHARGER-12/24/VDC AT 1AMP WITH LATCHING/NONLATCH
$142 .99
Lian Li RS 1000W Rotational Shift Fully Modular ATX Power Supply (W/USB Fan Hub) 90° AC ...
$164 .99
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Lian Li Edge Serie - 1200W Full Modular Power Supply (Fan USB Hub Included) - Gold - ATX 3.1 - ...
$174 .99
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Silverstone 750W, ATX, single +12V rails with 62A output, Silent 120mmFan with 18dBA, ...
$126 .99
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Lian Li EDGE850W Fully Modular Low-Noise ATX Power Supply - ATX 3.1 & PCIE 5.1 Compliant - ...
$117 .99
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ASRock Steel Legend SL-1200GW 1200W 80 PLUS GOLD & Cybenetics PLATINUM Full Modular ...
$159 .99
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Lian Li Edge Series-1000W Full Modular Power Supply (Fan Hub Included) - Gold-ATX 3.0, ...
$158 .99
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Lian Li Edge Series-1200W Full Modular Power Supply (Fan Hub Included) - Gold-ATX 3.0, ...
Save: $9.99
$184.98
$174 .99
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$184.98
$174 .99

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.