Power Supplies - Showing 2137 - 2160 of 17990 Products

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Refurbished: KHACHIMO DL180 DL160 DL80 ML150 G9 900W Power Supply HSTNS-PL48-B ...
$249 .00
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Refurbished: KHACHIMO 745 330 755 380 780 6Pin 305W Power Supply L305P-00 M8805 ...
$179 .00
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Refurbished: 1Pcs for ETP4830-A1 Power Supply 48V30A
$731 .00
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Refurbished: 1Pcs for TC6600-CB50E20 1400W tool box power supply GW-ERP1U1400C-SG ...
$552 .00
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Refurbished: KHACHIMO For FSP Small 1U 250W Switching Power Supply DPS-250AB-55C ...
$169 .00
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Refurbished: For U1A-G10550-DR R2A-GV0550-W Server Power Module 550W
$199 .00
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Refurbished: 1PCS for 1600W server power supply FSP1600-29FM 9PA16A1201
$323 .00
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Refurbished: KHACHIMO 665W Switching Power Supply DPS-665AB A PWS-665-PQ ...
$549 .00
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Refurbished: For Power8 S824 00RR363 00RR365 7001691-J002 900W Power Supply
$250 .00
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Refurbished: For EMC VNX2 BBU Battery SGB004-710G 078-000-092-07 VNX5400
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Refurbished: P1U-6150P P1G-6300P 150W 1U For ADVANTECH Server Industrial Power ...
$149 .00
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Refurbished: For DS460S-3-002
$162 .00
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Refurbished: For NetApp FAS270 Power Supply, GF270 FAS250 PN: X511A-R5 114-00012
$220 .00
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Refurbished: 1pcs for FSP400-80AGNBR 400W Power Supply
$642 .00
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Refurbished: PAC2000S12-B1Power Module
$199 .00
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Refurbished: KHACHIMO 2404 2409 Power Supply PS-5181-07 FSP180-50SPV ...
$69 .00
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Refurbished: 1PCS for U1A-G10550-DR 550W Power Module R2A-GV0550-W
$118 .00
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Refurbished: For TDI POWER SUPPLY MER27HIB-P57X00-LF Power Module 2700W
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$1,099 .00
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Refurbished: For NF5270M3 730W 2U GW-ERP2U700(90+)-2H
$84 .00
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Refurbished: 1Pcs for M10-1 Power Supply 7060781 7082782 7088116 DPS-770CB D
$418 .00
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Refurbished: 02312VFB power supply PDC1800S12-B1 switch power supply 1800W DC
$179 .00
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Refurbished: DL580 G5 DPS-1200FB A 441830-001 438202-001 440785-001 1200W ...
$89 .00
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Refurbished: A-200FBK-4.2 switch power supply 4.2V40A LED
$169 .00
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Refurbished: For C30 workstation power supply FSP800-90WSE 800W SP50A33621
$147 .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.