Power Supplies - Showing 2089 - 2112 of 17940 Products

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Refurbished: KHACHIMO Workstation P900 P910 1300W Switching Power Supply ...
$469 .00
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$469 .00
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Refurbished: For 99MIN1PACK 48/400 FC 241117.120 ELTEK Power Rectifier Module
$459 .00
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Refurbished: LDA10F-3 Industrial Medical Equipment Power Supply 3V/2.0A
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Refurbished: For 12V10A120W FSP220-50AANA CAD120121 MHG2-6400P Power Supply
$162 .00
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Refurbished: KHACHIMO C8000 650W Power Supply DPS-650CB A 403011-001 ...
$299 .00
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Refurbished: 1PCS for P510 P700 P710 FSP850-0AWSE 54Y8907 Workstation Power Supply ...
$368 .00
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Refurbished: 1pcs for FSP300-60GLC industrial computer power supply FSP300-60PFG ...
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Refurbished: 1pcs for SR650 590 550 SR630 Server Power Supply 01PF556 550W 01PF530
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Refurbished: For AT power supply SPQ-4200 SPQ-4250 SAP-4230P RSPM-6300P ...
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Refurbished: KHACHIMO 375W Switching Power Supply FSP375-60GCU
$169 .00
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Refurbished: HBX76 G2 S5 Power Supply 004827 E241 340 100V-240V 50 60Hz
$759 .00
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Refurbished: 1PCS For T350 R350 G6X Server Power Module R650FF3 D23019-008
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Refurbished: For Communication Power Module PSE350-A
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Refurbished: 350W Power Supply RP35SA-
$479 .00
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Refurbished: For ST-850E-AZ rated 850W power supply
$470 .00
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Refurbished: For R1S2-5120V0V R1S-1120V 1+1 Redundant Power Module
$199 .00
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Refurbished: 1PCS For FSP400-60RGVBD FSP420-30RGGBD 420W power supply
$132 .00
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Refurbished: For DS-5000B 60-1000315-03 100-605-108 power supply
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Refurbished: KHACHIMO 1U 250W Switching Power Supply HK353-11UEP
$159 .00
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Refurbished: Power Supply Module For M222S 1M222S-a01 M222S-a01
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Refurbished: For DS10 workstation power supply 30-50454-03 30-50454-01
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Refurbished: For B325 B320 B340 B520 540 Power Supply HKF 2002-32 APA006 fsp200-20si
$103 .00
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Refurbished: KHACHIMO FSP 80plus ITX FLEX Small 1U K39 49 T34 R47 44 M41 A35 S3 ZS-A4 ...
$119 .00
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Refurbished: 1pcs for R525G3 Server 1+1 DPS-770CB B 770W Power Supply
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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.