Power Supplies - Showing 2089 - 2112 of 17941 Products

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Refurbished: 1Pcs for S3500 Power PSU-350-AC power supply
$194 .00
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Refurbished: 1PCS for FSP460-701UG FSP460-7O1UH SPI400 80PLUS power supply
$132 .00
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Refurbished: 1600W Server Power Supply D1600E-S1 F1600E-S0 95HR5 T4GCW D5W1N
$299 .00
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Refurbished: For PE690 Workstation Power Supply WS490 NPS-1000ABA ND285
$132 .00
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Refurbished: 1Pcs for PWS-802A-1R server power supply 800W
$435 .00
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Refurbished: Power Supply NLP65-7624 100-24VAC
$369 .00
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Refurbished: KHACHIMO M310 M410 M415 M510 M610 10Pin 400W Power Supply ...
$139 .00
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Refurbished: 1pcs for F5 5000S 5050S 7000S 73-610-125 PWR-0227-02/03/04/05 Power ...
$193 .00
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Refurbished: 1Pcs for AT power supply, industrial computer 300W with P8P9
$149 .00
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Refurbished: 1Pcs for cPS-H325/AC HAC250P-490 (E) CPCI Power Module
$150 .00
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Refurbished: For CL380 1850R 1600 Power Supply PS-6231-2A 283608-001 283606-001
$179 .00
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Refurbished: 1Pcs for 0235G404 STLZ01PWRA Storage S5600T S6800T S5800T Battery BBU
$779 .00
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Refurbished: 7001490-J000 P720 1725W 12V 134A high-power switching
$147 .70
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Refurbished: For GW-CRPSD800/GW-ERP2U700(90+)/GW-CRPSHD800A
$220 .00
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Refurbished: KHACHIMO Optiplex 3046 3040 3050 5050 MT 6Pin 260W Power Supply WYHR8 ...
$169 .00
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Refurbished: LEA50F 30V1.7A 50W Switching Power Supply LEA50F-30-SNY LEA50F-30 SNY
$699 .00
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Refurbished: KHACHIMO PSU For NETAPP FAS2050 855W Switching Power Supply YM-3901A ...
$549 .00
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Refurbished: C9500-40X-A Switching Power Supply PWR-C4-950WAC-R ...
$2,199 .00
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$2,199 .00
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Refurbished: For P2F-5400V P2H-5400V 400W
$176 .00
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Refurbished: 200W Power Supply PCI204-1022-4-SMR
$559 .00
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Refurbished: R510 G6 1U 600W Switching Power Supply EFAP-601 36001025
$169 .00
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Refurbished: 1Pcs power supply for video recorder SFXA5061B SFXA5201A C GW-M200HSDA
$90 .00
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Refurbished: KHACHIMO 600 G2 800 G2 SFF 200W Power Supply PS-4201-1HB 796420-001 ...
$89 .00
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Refurbished: For P560Q P570 7888 Power Supply 97P5676 39J2779 AWF-11DC-1400W
$162 .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.