Power Supplies - Showing 2065 - 2088 of 17943 Products

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Refurbished: For V440 Server Power 300-1501 300-1851 DPS-680CB A
$134 .00
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Refurbished: For 111-00524+B2 110-00133+A8 IBM NETAPP FAS2020
$399 .00
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Refurbished: RMC30A-2 Original Disassembly Switching Power Supply 100V input ...
$159 .00
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Refurbished: For ACE-832AP-RS ACE-A130A FSP350-60GLN DPS-300LBA ACE-832A Power ...
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Refurbished: POWERLD PDF-1500 12V125A 1500W Switching Power Supply PDF-1500-12
$1,499 .00
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Refurbished: 1PCS For Switching Power Supply 850W AP-PSU-HE850-AC-01 0963415-07
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Refurbished: KHACHIMO ASA5545-X 450W Power Supply PWR-WAVE-450W FS1002 ...
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Refurbished: KHACHIMO 600 680 800 880 G2 280W Power Supply PCE015 PCE016 ...
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Refurbished: For PLA100F-48 COSEL Switching Power Supply 30F24 PLA600F-12 ...
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Refurbished: XW9300 Power Supply 377788-001 372357-004 DPS-750CB A 750W
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Refurbished: 1Pcs for B500 B505 B510 Power Supply HK300-95FP HK300D PC9024
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Refurbished: 1Pcs for SPI FSP FSP300-60PFN (12V) industrial server power supply
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Refurbished: KHACHIMO P340 M930T 10Pin 600W Power Supply FSP600-60AGPAA ...
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Refurbished: Power Supply For F6B6A6A6G5
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$1,299 .00
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Refurbished: 1Pcs for R48-5800E Communication Power Module 48V100A
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Refurbished: 60W Switching Power Supply PAC-60WC-L
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Refurbished: PWR-C2-250WAC= 250W AC Config 2 Power Supply
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Refurbished: 1Pcs for T5810 T7810 Workstation Power Supply 685W H685EF-00 CT3V3 ...
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Refurbished: Server Power Supply For POWER-ONE 12V 50A 600W SPAFCBK-09G
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Refurbished: FSP300-601UD For FSP Power Supply 300W 1U
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Refurbished: Power Rectifier Module ESR-48/10B A 54.3V 10A REV 0.1
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Refurbished: For DS-VE22S-B DS-VM21S-B DS-VM11S-B
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Refurbished: 1PCS for ADT-925C 260W AT Industrial Power Supply with P8 P9 Interface
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Refurbished: For RH2288HV5 RH1288HV5 server power supply 900W PAC900S12-BE ...
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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.