Power Supplies - Showing 2041 - 2064 of 17941 Products

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Refurbished: 1Pcs for FSP1200-20FM server power supply 1200W 9PA12A2700
$239 .00
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Refurbished: KHACHIMO 1U 650W Switching Power Supply S12-650P1BB S650E007L
$399 .00
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Refurbished: KHACHIMO 12V5.25A 65W Power Supply MINT1065A1275C01
$629 .00
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Refurbished: Monitoring Power Module For ELTEK Smar Tback GB RS232 Front 242100.114
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$248 .20
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Refurbished: KHACHIMO Power Module For ABB Power Supply PM564-R-AC ...
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Refurbished: 1Pcs for SPI300MP TMPC400-72 GM150-1200850 FSP400-72MP ...
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Refurbished: KHACHIMO AT 150W Power Supply SPE-4150F
$879 .00
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Refurbished: Power Supply 400W N2200-PAC-400W
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Refurbished: 1Pcs for DPST-3180AB A server power supply S204S206, 12.5V, 250A, 3000W ...
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Refurbished: KHACHIMO Small 1U 20Pin+10Pin 250W Power Supply DPS-250AB-89 G ...
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Refurbished: 1Pcs for R4850G6 48V50A Communication Power Module 3000W
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Refurbished: For MSA2000 PN: 481342-001 AJ751A
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Refurbished: 7001374-Y0002 39Y7367 39Y7381 8886 Server Power Supply 1450W
$179 .00
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Refurbished: disk cabinet power supply DS4700 EXP810 42D3346 42D3345 81Y2437 600W
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Refurbished: LDA10F-3 Industrial Medical Equipment Power Supply 3V/2.0A
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Refurbished: 1PCS for CSU800AP-3-100 800W server power supply
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Refurbished: KHACHIMO Rated 180W Peak 230W Power Supply GW-TFX180
$89 .00
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Refurbished: KHACHIMO CWA2-1000-10-TY01 1U 1000W CPSU-0240 power module
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Refurbished: 1pcs For V440 Server Power 300-1501 300-1851 DPS-680CB A 3001851-01
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Refurbished: 1PCS for AX2-5300FB-2S 650W Industrial Control Server Power Supply
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Refurbished: 1Pcs for R430 550W server power supply D550E-S1 dps-550ab x185v
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Refurbished: OPTIPLEX 5250 5260 Power Supply H155EA-01 AC155EA-01 HPY3Y X1V9H
$79 .00
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Refurbished: KHACHIMO 250W Switching Power Supply API6PC05 HK350-55BP
$79 .00
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Refurbished: 1PCS for I620-G20 3.5 inch 12Gb 12 disk 80H10931310B0
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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.