Power Supplies - Showing 289 - 312 of 11994 Products

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ASRock Challenger CL-850G 850W 80 PLUS GOLD Certified Non-Modular Power Supply, ...
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ASRock Steel Legend SL-1200G 80 PLUS GOLD & Cybenetics PLATINUM Full Modular Power ...
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Thermaltake Smart BM3 650W 80Plus Bronze ATX 3.0 & PCIE 5.0 Ready Semi-Modular Power ...
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ASRock Phantom Gaming PG-1000PSF 1000W 80 PLUS GOLD & Cybenetics PLATINUM Full ...
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ASRock Phantom Gaming PG-850PSF 850W 80 PLUS GOLD & Cybenetics PLATINUM Full ...
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ASRock Phantom Gaming PG-1000G 1000W 80 PLUS GOLD & Cybenetics GOLD Full Modular ...
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Lian Li SX Platinum 1000W SXP Compact ATX Form Factor Power Supply w/ 12V-2x6 Cable - ATX ...
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ASRock Phantom Gaming PG-850G 850W 80 PLUS GOLD & Cybenetics PLATINUM Full Modular ...
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SilverStone Strider Platinum series PS-ST75F-PT 750 W ATX12V / EPS12V 80 PLUS PLATINUM ...
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SilverStone Technology HELA 1650R Platinum Cybenetics Platinum 1650W PCIe 5 Fully ...
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Silverstone SX750 Gold 80 PLUS Gold 750W SFX fully modular power supply
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Bluegears b-Vigor900W Power Supplies
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MSI MAG 1000W Power Supply - Internal - 120 V AC, 230 V AC Input - 1000 W - Active PFC - 1 ...
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GIGABYTE GP-UD750GM PG5 V2 750 W 80 PLUS GOLD Certified Active PFC Power Supply
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GIGABYTE GP-UD1000GM PG5 ICE 1000 W 80 PLUS GOLD Certified Active PFC Power Supply
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GIGABYTE GP-UD750GM PG5 ICE 750 W 80 PLUS GOLD Certified Active PFC Power Supply
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GIGABYTE GP-UD850GM PG5 Rev2.0 - PCIe5.0 Ready - ATX3.0 - 850W 80 Plus Gold Certified - ...
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SilverStone SFX Series SST-ST45SF-V3 450 W SFX 80 PLUS BRONZE Certified Active PFC Power ...
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Altronix Off-Line Switching Power Supply/Charger
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be quiet! Pure Power 13 M 1200W ATX 3.1 Power Supply | 80 Plus Gold Efficiency | PCIe 5.1 | ...
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Thermaltake Toughpower GF A3 ATX 3.0 1050W 80+ Gold Full Modular SLI/Crossfile Ready ...
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ASRock PRO Series PRO-650B 650 W ATX 3.1 Compatible 80 PLUS BRONZE Certified Power ...
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Lian Li SP850 Gold - 850 Watt SFX Form Factor Power Supply with Native 12V-2x6 Cable - Low ...
$144 .99
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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.