Power Supplies - Showing 2041 - 2064 of 17990 Products

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Refurbished: 1U 350W Switching Power Supply P1H-6350P
$199 .00
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Refurbished: KHACHIMO For FSP 460W Switching Power Supply FSP460-60GLN
$339 .00
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Refurbished: KHACHIMO 700W Power Supply XCB44BF00P03A Work Like New
$6,499 .00
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$6,499 .00
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Refurbished: 1pcs for YKD-6300DPSYTL YKD-2500S12V P2U YKD-6300YTL A ...
$418 .00
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Refurbished: For M1P-2500V server thermal, power supply 500W
$323 .00
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Refurbished: For 3Y 1U Server Power Supply YM-5201D PWS-202-1H
$169 .00
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Refurbished: A6211-69002 7000222-0000 0950-3789 VA7100 VA7400
$289 .00
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Refurbished: 1Pcs for MR483000HG2B 53.5V56.1A3000W communication power supply, ...
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$147 .00
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Refurbished: Power Supply RPS5 30123-201 DCJ2201-02P
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$1,169 .00
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Refurbished: 1PCS for Industrial computer power supply P1U-6200P 1U
$116 .00
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Refurbished: 3000W 48V Power Supply For ZXD3000 V5.7
$349 .00
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Refurbished: D06S 660S V270S S3647 220W Power Supply H220AS-01 L220AS-00 ...
$49 .00
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Refurbished: R530 R630 R730/XD T430 Server 495W EPP Power Supply D495E-S1
$99 .00
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Refurbished: For FSP450-60IHAA Power Supply 32 Inch Graphics Card 450W
$129 .00
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Refurbished: Switching Power Supply 200W S26113-E464-V50 NPS-200PB-121 B ...
$659 .00
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Refurbished: X3850 X3950 X5 1975W 7001524-J000 7001524-J002 49Y7760 39Y7203 ...
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Refurbished: For Communication Power Module GERM4810-01GY
$758 .80
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Refurbished: FSP IPC 500W Power Supply FSP500-60GMN
$499 .00
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Refurbished: 1pcs for FSP250-20LR DS600-G1 Power Supply
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Refurbished: 1200W Switching Power Supply PHD-1K2WA-F
$549 .00
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Refurbished: Server Power Supply PWS-1K43F-1R PWS-1K41F-1R NF8560M2 SC748
$169 .00
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Refurbished: Dell Optiplex 9030 Inspiron 5348 185W Power Supply D6V04 HPXJG N28RM ...
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Refurbished: 1Pcs for 2500 26V 83.3A MA 2500-26 2166W 24V 80A100A power supply
$191 .00
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Refurbished: For FSP-400-60THA-P 70PFL Advantech Industrial Computer Server Power ...
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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.