Power Supplies - Showing 1945 - 1968 of 17979 Products

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Refurbished: KHACHIMO -48V12.5A 600W Power Supply AD601M48-1M6
$1,299 .00
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$1,299 .00
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Refurbished: KHACHIMO 2M248K (MM) magnetron air-cooled 1000w
$169 .00
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Refurbished: 1PCS for PWS-2K04A-1R 2000W 10/12 6 + 2P/8P port power supply
$103 .00
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Refurbished: 1Pcs for 52A Server Power 39J0271 39J5071 7001073-0000 7001073-Y000
$418 .00
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Refurbished: For 1U350W server power supply DH-355P chassis
$119 .00
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Refurbished: 1Pcs for HDS HUS110 HUS130 3285122-A 3285118-A Power Supply
$485 .00
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Refurbished: R620 R720 750W Hot Plug Power Supply 05NF18 0GDPF3 09PXCV
$89 .00
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Refurbished: PSU For 3Y 800W Power Supply YM-2801D
$599 .00
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Refurbished: 1Pcs for DPS-900EB A P/N: 54Y8979 600W P520 P720 900W Server Power ...
$298 .00
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Refurbished: 7001374-Y0002 39Y7367 39Y7381 8886 Server Power Supply 1450W
$179 .00
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Refurbished: For FSP220-50FEB TURBO COOL 400 SLIM ATX Industrial Control Power Supply
$176 .00
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Refurbished: 1PCS for AC240ES-00 OptiPlex7010 9010 SFF Small Chassis Power Supply
$81 .00
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Refurbished: For DENSEI-LAMBDA 30W Power Supply For LWT30H-522
$498 .00
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Refurbished: Seasonic PRIME TX-1000, 1000W 80+ Titanium, ATX Form Factor, Full Modular, ...
$299 .00
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Refurbished: 1PCS for H2224XXLR3 2U 3647 pin S2600BP U.2 server
$2,089 .00
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$2,089 .00
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Refurbished: KHACHIMO Power Supply For TDK-Lambda NV-175 175W Power Supply ...
$2,399 .00
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$2,399 .00
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Refurbished: KHACHIMO 600W Power Supply DPS-600DB A
$499 .00
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Refurbished: 1pcs for JPSU-850W-DC-AFI 850W dc QFX5100
$433 .00
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Refurbished: DC Screen Charging Module 11010-5 MR110-1500S-ZH 110V 10A
$149 .00
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Refurbished: PE6850 1470W 12V 121a Server Redundant Power Supply
$148 .70
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Refurbished: KHACHIMO 250W Power Supply APS250
$299 .00
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Refurbished: For 86 SFF Power Supply D19-310P1A PA-3401-1HA 942332-001 310W
$118 .00
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Refurbished: POWER Rated 400W Switching Power Supply HK450-11A
$438 .00
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Refurbished: KHACHIMO OptiPlex 760 960 580 780SFF 235W Power Supply AC235AS-00 ...
$59 .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.