Power Supplies - Showing 2041 - 2064 of 17933 Products

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Refurbished: KHACHIMO 150W Power Supply EFRP-151
$349 .00
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Refurbished: 1U 250W Switching Power Supply EN-8257763 HPS-2501U-21205
$399 .00
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Refurbished: EX4330 EX4300 350W JPSU-350-AC-AFO 740-046873 DPS-350AB-22 B
$199 .00
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Refurbished: PE-5221-08 AF PS-5221-9 06 Rated 220W Small Chassis Power Supply
$59 .00
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Refurbished: For API4FS38 15R7998 5786 5787 7031-T24 Power Supply
$265 .00
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Refurbished: For Z200 Graphics Workstation Power Supply DPS-320KB-1 A 502629-001 ...
$101 .00
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Refurbished: 1150W Switching Power Supply HRS1150-9000
$499 .00
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Refurbished: KHACHIMO H3050 M92P M82 M78 M73 M93 E73 M83 M91 M4550 TFX 14Pin ...
$79 .00
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Refurbished: For FSP500-50HPN Gaming Console Desktop Power Supply 500W Graphics ...
$179 .00
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Refurbished: For 500W power supply PS-8501-2VB 2A ATX power supply Dual graphics card 6 + ...
$162 .00
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Refurbished: 150W Switching Power Supply PC150B-1 DPSN-150GB A
$399 .00
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Refurbished: Communication Power Module PSL480-AD24P-H
$359 .00
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Refurbished: 1PCS for NEPS800-A JC146A SR0M7POWERH SR8802 Power Supply Module
$412 .00
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Refurbished: KHACHIMO PSU For 3Y 380W Switching Power Supply YM-2381A 9ACPSU-0010 ...
$459 .00
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Refurbished: For 01DC150 01DC149 SP-PCM02-HE580-AC DS6200 DS2200 584W Power ...
$529 .00
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Refurbished: D10-240P1A PC9058 CFH0240WWA 4300 8100 SFF Small Chassis Power ...
$169 .00
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Refurbished: VLT130-4110 For EOS E01-X14C-B117 Industrial Control Equipment Power ...
$139 .00
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Refurbished: DPS-200PB-176A SFXA5061B Hard Disk Recorder Host Monitoring Power ...
$139 .00
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Refurbished: KHACHIMO 600W Power Supply MP4-1E-1L-1S-4LF-00 73-540-0396
$2,699 .00
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$2,699 .00
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Refurbished: For DS20E power supply 30-50662-01 API-8767-01 375W
$323 .00
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Refurbished: 1Pcs for CRPS800C 800W server power supply
$149 .00
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Refurbished: KHACHIMO 600 680 800 880 G2 280W Power Supply PCE015 PCE016 ...
$69 .00
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Refurbished: For 2022 HW 0235G6RF STLZ01CFBB 2600T S2200T
$293 .00
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Refurbished: 80PLUS Bronze 1U 250W Switching Power Supply EFAP-S250 EFAP-M251
$289 .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.