Power Supplies - Showing 2161 - 2184 of 17942 Products

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Refurbished: ML150 DL120 DL180 550W Power Supply HSTNS-PL53 765423-201 ...
$289 .00
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Refurbished: KHACHIMO 24V3.1A 75W Power Supply FCA75F-24 FCA75F
$499 .00
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Refurbished: 1Pcs for AD301M12-1M1 power supply
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Refurbished: For 683241-001 682373-001 3PAR M6710/6720 580W Power Supply
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Refurbished: VLC60N0001 For Industrial Medical Power Module 17V3.5A
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Refurbished: 1PCS for NEPS800-A JC146A SR0M7POWERH SR8802 Power Supply Module
$412 .00
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Refurbished: KHACHIMO 2U 550W Switching Power Supply ST-550UAC-05G
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Refurbished: 1Pcs for 3292486-A VSP 5500H DKC910I-CBX battery
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Refurbished: For Cash Register HK200 HK300 Power Supply GW-FLX1205 Dual 12V Rated ...
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Refurbished: For 23-0000092-02 6505/6510 5100 switching power supply TDPS-150BB A
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Refurbished: Gen9 754381-001 723599-001 720479-B21 DPS-800AB-11 A HSTNS-PL41 ...
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Refurbished: 1PCS for FSP400-70PFL (SK) Industrial Control Power Supply FSP350-70PFL ...
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Refurbished: 1PCS for switching power supply FSP550-12A 550W
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Refurbished: For V1 B1L G1 For iPollo HQ3300 Power Supply
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Refurbished: KHACHIMO 650W Switching Power Supply SD-700U SD-600U SD-500U
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Refurbished: FSP600-60AGPAA 10 Pin Desktop Power Supply 600W Supports Dual Graphics ...
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Refurbished: 1pcs for 1U FSP180-50LE FSP270-60LE
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Refurbished: PBA1500F-48 Original Disassembly Miniaturized High Power Thin Power ...
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Refurbished: 1Pcs for 3647 small chassis power supply
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Refurbished: PPS300R-60M 300W NS-SM-A-BSE Switching Power Supply
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Refurbished: PBA300F-36 Original Disassembly Switching Power Supply 36V/9A
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Refurbished: For DS4300 FASTT600 Controller 24P8206 24P8059 24P8225 1pcs
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Refurbished: 1Pcs for FSP300-60GNV port power supply
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Refurbished: 1PCS for 750W Power Supply R2A-PV0750-WBB U1A-P10750-DRB U1A ...
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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.