Power Supplies - Showing 553 - 576 of 11992 Products

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2000W 220V Switching Psu Power Supply For Asic Antminer Ethereum S9 S7 L3 Rig Mining ...
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200W Psu Desktop 200W Power Supply For 790 990 7010 9010 USFF PSU L200EU-00 ...
$56 .75
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SAMA B650 650W ATX 3.1 Power Supply, Cybenetics Bronze Certified, PCIe 5.1 Ready ...
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PSU For HP 400G3 Power Supply D13-180P1A D14-180P1A DPS-180AB-20 A PCB230 PCD009 ...
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Genuine PSU PS-3221-9AE 220W 220-240V-6/3.15A 50/60Hz Power Supply Well Tested For ...
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600W Power Supply PSU PFC Silent Fan ATX 24pin 12V PC Computer SATA Gaming PC Power ...
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APEVIA ATX-VS450W 450 W ATX12V Power Supply
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1200W PC Power Source Supply 1000W SEMI-MODULAR POWER SUPPLY 110V 220V Gaming ...
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SAMA XP 850w ATX Power Supply PSU For Gaming Computer PC Power Supply Unit White - 80 ...
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High-Efficiency PSU 1800W Power Supply 6PIN*10 Support Antminer S9 T9 A7 D3 L3 BTC Miner ...
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Power Supply For PC 1600W 1800W 2000W 2400W 2600W ATX Mining Bitcoin High Efficiency ...
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2400w High Efficient 2500W Mining Psu 2500W Power Supply Antminer Psu Computer Power ...
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460W Power Supply 460W PSU For Desktop 460W 12CM Big Fan Mute Desktop Power rated ...
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SAMA XP 850w ATX Power Supply PSU For Gaming Computer PC Power Supply Unit - 80 Plus ...
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1800W PSU Power Supply For 8 GPU 1800W ATX Gaming Power Supply 80PLUS Gold Switching ...
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450Watt Power Supply FSP450-50ETN 54Y8899 P300 E31 Tower 450W Power Supply 54Y8860 ...
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360W Power Supply PSU H360EGM-00 VM8KR For 3668 SFF 3050MT 7050MT V3650 V3653 MT ...
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400W MINI PSU ATX PC Power Supply PSU 12V atx
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2500w RGB PSU PC power supply 110v 220v Miners ATX Mining Machine For Computer BTC ...
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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.