Power Supplies - Showing 2377 - 2400 of 17938 Products

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Refurbished: LCA150S-24 Original Disassembly Switching Power Supply 24V6.3A 150W
$169 .00
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Refurbished: 1Pcs for Phocos LCD solar charge and discharge controller PL60 with data ...
$118 .00
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Refurbished: 1600W Power Supply EMC-S-1600ADE00 071-000-701-01
$539 .00
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Refurbished: KHACHIMO 3046 3040 3050 5050 5090 8940 6Pin 360W Power Supply TT8F5 ...
$239 .00
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Refurbished: PWR-C1-715WAC-P C9300 715W Series Switch Power Supply
$289 .00
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Refurbished: 1PCS for X3250M2 X3650M6 FSA021 94Y8348 00MX952 Server Power Supply ...
$131 .00
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Refurbished: For NS-5400-PWR-AC Firewall Module Power Supply
$382 .00
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Refurbished: For A840R-G -10 Server Power Supply 3Y YM-2102B YM-2102BBR 1000W
$239 .00
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Refurbished: For FSP600-40MRA (M) 600W Power Supply
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Refurbished: 1pcs for M70AD HBD002 DPS-200PB-193 A Power Supply 200W
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Refurbished: Power Supply For DELTA PMC 24V6.25A 150W Power Supply PMC-24V150W1AA
$79 .00
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Refurbished: KHACHIMO Power Supply MSP1698 0014-00-0225
$1,699 .00
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$1,699 .00
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Refurbished: For 1100W Server Power Supply S-1100ADU00-201 G84027-007
$132 .00
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Refurbished: 1Pcs for 24V20A Rail Power Supply PRO-480W 24V 20A EX 2467000000
$250 .00
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Refurbished: KHACHIMO R510 910 T710 750W Power Supply 7001531-J000 7001531-J100 ...
$349 .00
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Refurbished: KHACHIMO 250W Switching Power Supply EFRP-250ANF EFRP-250A ...
$439 .00
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Refurbished: KHACHIMO Switching Power Supply Megmeet 600W Power Supply MSP600
$379 .00
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Refurbished: For R2W-6500P 500W + 500W Redundant Power Supply
$397 .00
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Refurbished: KHACHIMO PowerVault 220S 221S 584W Switching Power Supply DPS-600FB A ...
$359 .00
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Refurbished: 1PCS for PWS-665-PQ Server Power Supply 665W
$191 .00
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Refurbished: For PAC-350WB-L 350W AC Power Module AR2240/AR3200
$349 .00
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Refurbished: KHACHIMO PSR650B-12A1 server power module 650W GPR650B-12A1H
$189 .00
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Refurbished: For G6/G7 Server 750W Power Supply DPS-750RB A 506822-101 511778-001
$75 .00
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Refurbished: SP673 For Cherokee SP673-Z01A N480060001 REV.B 250W International ...
$259 .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.