Power Supplies - Showing 2329 - 2352 of 18339 Products

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Refurbished: FSP350-701UJ 350W 1U ATX Industrial Computer Server Power Supply
$209 .00
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Refurbished: 1100W Power Supply 700-014189-0000 FSF056
$529 .00
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Refurbished: 1Pcs for Ml310e G8 DPS-350AB-20A 671310-001 686761 Server Power Supply ...
$191 .00
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Refurbished: KHACHIMO Power Supply For TDK-LAMBDA NV-POWER NV-700 700W Power ...
$5,999 .00
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$5,999 .00
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Refurbished: 1PCS For MD3600 MD3620F 0CG87V 0FHF8M 08MN5H
$343 .00
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Refurbished: X3500 X3550 X3650 M4 Power Supply DPS-750AB-14 A 69Y5871 69Y5872
$139 .00
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Refurbished: KHACHIMO R620 R720 R730 R520 DC48V 1100W Power Supply E1100D-S0 ...
$459 .00
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Refurbished: KHACHIMO RQ940 NF8470M3 1600W Switching Power Supply R12-1K6P2A
$389 .00
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Refurbished: For HDS HUS150 Storage Cabinet Main Cabinet Dual Power Supply Dual ...
$1,849 .00
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$1,849 .00
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Refurbished: 1PCS for 03031MPJ STL2BATTA01 S5300 S5500 V3
$645 .00
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Refurbished: For HS12 802827J 8028PAA Blade Server BladeCenter HS12
$250 .00
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Refurbished: Communication Power Module GERM4810-01VA
$358 .80
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Refurbished: A5E02625806-K7 Origina IPC Power Supply
$649 .00
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Refurbished: KHACHIMO DS-K7M-AW50-1 12V4.2A Power Supply AY-G042-12
$89 .00
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Refurbished: KHACHIMO U1011 1015 1019 180W Power Supply PS-5181-8VS ...
$79 .00
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Refurbished: 7932N Hard Disk Recorder NVR Power Supply DPS-80PB-10A DPS-200PB-176
$99 .00
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Refurbished: 1pcs for FSP350-50BR 350W FSP350-50BR Equipment Power Supply
$191 .00
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Refurbished: 1Pcs for YM-5301G 300W ITX FLEX NAS Server, Power Supply
$105 .00
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Refurbished: DL580G3 G4 TSTNS-PA01 337867-001 364360 Server Power Supply 1300W
$129 .00
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Refurbished: PMC50E-1 -XULA Original Disassembly Switching Power Supply
$129 .00
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Refurbished: KHACHIMO PSU For FSP 350W Switching Power Supply RM-3514-00
$399 .00
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Refurbished: 1Pcs for CEG75035 150-750Vdc/0-33A/20KW DC/DC Charging Module
$676 .00
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Refurbished: 1PCS for LCM600Q industrial power supply, medical power supply
$132 .00
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Refurbished: KHACHIMO 510S M420 280 G2 400 G4 m710e m720e M4000S 700-24AGR 6Pin ...
$129 .00
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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.