Power Supplies - Showing 2089 - 2112 of 17941 Products

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Refurbished: 1pcs for R1V-2275V Industrial Computer 1U Redundant Power Supply Module ...
$113 .00
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Refurbished: 80plus Bronze 430W Switching Power Supply SS-430GB Active PFC F3 ...
$199 .00
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Refurbished: KHACHIMO DPS-750AB-4A HSTNS-PD31 666375-101 674275-B21 ...
$249 .00
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Refurbished: For VNX3100 3150 078-000-072 078-000-093
$293 .00
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Refurbished: PSU For FLEXTRONICS 1100W Power Supply EMC-S-1100ADU00 071-000-711
$437 .00
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Refurbished: 1pcs for PS-160A industrial computer power supply
$119 .00
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Refurbished: For X3650 M4 server power supply 900W 94Y8118 94Y8117 7001606-J002
$88 .00
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Refurbished: KHACHIMO 360 380 G7 750W Power Supply DPS-750UB B HSTNS-PD22B ...
$149 .00
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Refurbished: R510 R910 Z1100P-00 7001515-J100 Server Power Supply 1100W
$139 .00
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Refurbished: For HPCOMPAQ ML530G1 ML570G1 Power Supply 144596-001 157793-001
$209 .00
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Refurbished: NF5460M4 Delta DPS-1200AB-4D Redundant Server Power Module 1200W
$269 .00
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Refurbished: KHACHIMO NAS HTPC Small 1U K39 K49 T34 T39 R47 R44 M41 S3 ZS-A4 G5 400W ...
$179 .00
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Refurbished: KHACHIMO Power Supply For FSP FLEX 1U K39 600W Power Supply ...
$239 .00
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Refurbished: For 3D Communication Power Module 3C17264
$718 .00
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Refurbished: KHACHIMO 48V13A 624W Power Supply SL600PS48-CT SL600PS
$3,599 .00
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$3,599 .00
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Refurbished: For 2720 AIO Power Supply XPS One 2710 235W PSU L235EA-00 53WG5
$162 .00
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Refurbished: 1pcs for 01A F536 00E6367 VRM Voltage Regulator Module P770 P780 2BF8 ...
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Refurbished: PE 1600SC 450W Power Supply DPS-450FB A 02P669 0N4531 2P669
$199 .00
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Refurbished: Power Supply Module For HD4825-3
$269 .00
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Refurbished: KHACHIMO 550W Power Supply DPS-550AB-54 A DPS-550AB-54A ...
$528 .00
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Refurbished: For Z800 1250W Power Supply, 508149-001 480794-002/003 DPS-1050DB A
$176 .00
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Refurbished: X4140/X4150/T5120 Server Power 300-2015-05 A221 658W
$139 .00
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Refurbished: 400W Power Supply PWS-406P-1R CPR-4011-4M1
$299 .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.