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Refurbished: 1pcs for 12V150AH 12V200AH UPS FTC-150
$433 .00
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Refurbished: 1PCS for PSC100-A-1 Power Module FSP100-1E02 (PSC100-A)
$102 .00
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Refurbished: 110V3.2A 350W Power Supply SYS-350-S110 SYN-350-S110
$769 .00
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Refurbished: V40Z Power Supply 370-6916/1953 SP555 Server Power 760W
$209 .00
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Refurbished: For PWS-707-1S 700W Server Power Supply
$220 .00
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Refurbished: KHACHIMO 200 220 390 790 990 3010 7010 9010 300W Power Supply ...
$79 .00
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Refurbished: 1Pcs for T3600 T3610 T5810 425W Power Supply 0G50YW 0DNR74 0Y6WWJ
$119 .00
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Refurbished: 1pcs for M10-1 DPS-770CB D power supply 7060781 7082782 7088116
$254 .00
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Refurbished: 1pcs for 00AR16000AR156 V7000 controller 8G cache 2076-124112
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$1,118 .00
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Refurbished: PSU For Liteon 470W Power Supply PS-2471-1Q1
$299 .00
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$299 .00
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Refurbished: 1PCS for 02310UWW HSP1800-S12A 6800v3 1800W Power Supply
$147 .00
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Refurbished: KHACHIMO ATX 300W Switching Power Supply ACE-A130B-R10 ACE-A130B
$469 .00
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Refurbished: 1Pcs for 3267 3268 3667 3668 3050 3060 3070 5050 7050 power supply
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Refurbished: 1pcs for AD361M12-2M2 switching power module output 12V30A
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Refurbished: For EFRP-2553P01 1+1 Redundant Power Supply
$339 .00
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Refurbished: MMC50A-1 Original Disassembly Switching Power Supply +5V +12V -12V
$199 .00
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Refurbished: 1Pcs for PWS-1K25P-PQ equipment machine, workstation, medical power ...
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Refurbished: For Server Power PWS-1K05A-1R
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Refurbished: 1Pcs for FSP300-60ATV (PF) IPC Power Supply FSP300-60PLN FSP250-60PFN
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Refurbished: PBA50F-5 Original Disassembly Switching Power Supply 5V/10A
$199 .00
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Refurbished: For ThinkstationS20 S30 Workstation Power Supply FSA034-EL1G 54Y8844 ...
$206 .00
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Refurbished: Workstation Z600 Power Supply 482513-003 508548-001 DPS-725AB
$119 .00
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$119 .00
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Refurbished: For MacPro MA356 DPS-980AB A 614-0383 980W Power Supply Ma970 A1186
$118 .00
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Refurbished: SMU11C monitoring module power switch monitoring system
$349 .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.