Power Supplies - Showing 2137 - 2160 of 17938 Products

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Refurbished: For XPS 2710 AIO Power Supply, 0N6G7, 53WG5, 235W
$206 .00
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Refurbished: For Power Supply 760W YH-7761A YM-7421F YM-7381C FSP400-70MPD
$389 .00
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Refurbished: 1Pcs for 14-pin 500W power supply FSP500-50ETN FSP450-50ETN with graphics ...
$119 .00
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Refurbished: KHACHIMO 1000W Power Supply 700-014291-0000 M1034961-003
$2,999 .00
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$2,999 .00
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Refurbished: 1pcs for PSL130-AD-H PSL180-AD-H power supply for S5600-26C 52C ...
$162 .00
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Refurbished: KHACHIMO FSP 80plus Bronze Industrial Computer Power Supply 350W ...
$259 .00
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Refurbished: KHACHIMO 48V1.25A 60W Power Supply TN13-0060-48
$199 .00
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Refurbished: 1Pcs for YM-2301TBR DPS 250AB DPS-250AB-24C SS-200SU YM-7421DAR ...
$194 .00
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Refurbished: LB9 LB8 PS-2471-1L 470W
$189 .00
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Refurbished: 1Pcs for U1A-K10150-DRB 150W power supply 550W 800W
$343 .00
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Refurbished: OptiPlex 390 790 990 3010 7010 9010 240W Switching Power Supply DCB15 ...
$59 .00
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Refurbished: For FSP150-20AL 54Y8892 14-pin Switching Power Supply 150W
$139 .00
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Refurbished: KHACHIMO V7000 764W For SPAXRTX-07AG SP-PCM2-HE764-AC-HPE ...
$999 .00
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Refurbished: LWT50H-5FF Industrial Control Medical Equipment Power Supply
$339 .00
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Refurbished: For Power Supply H3C PSR320-A Switch 300W AD671M12-2M1B 661W
$298 .00
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Refurbished: For Power Supply for C240 C220 M4 UCSC-PSU1-770W 341-0591-03 ...
$129 .00
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Refurbished: X3100M3 Server Power Supply DPS-350AB-16 A 49Y7260 49Y7284
$209 .00
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Refurbished: KHACHIMO 1U 650W Switching Power Supply DPS-650UB G DPS-650UB C
$249 .00
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Refurbished: 1pcs for PSA350M server redundant power supply PSA350M machine power ...
$235 .00
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Refurbished: KHACHIMO CRPS Industrial Monitoring Power Supply 400W Switching Power ...
$598 .00
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Refurbished: Power Supply Used On DS-C9148S-K9 Series Switches 341-0706-01 300W ...
$149 .00
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Refurbished: 1Pcs for DPS-500AB-22 T 500W 1U Power Supply ITX
$149 .00
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Refurbished: For PWR-MX960-AC-S-B MX960 Power Supply 740-013682 DCJ17001-01P
$529 .00
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Refurbished: Server Power Supply ML370 G2 G3 216068-002 230993-001 EPS115 500W
$99 .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.