Power Supplies - Showing 2305 - 2328 of 18359 Products

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Refurbished: For R7525 R7625 Rack Server, Power Supply 2400W M63JN
$323 .00
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Refurbished: 1Pcs for 3710 3910 Power supply 260W HVW4Y H260EBS-00 D260E-005P
$90 .00
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Refurbished: KHACHIMO M52 m8000t A52 310W Power Supply DPS-310CB A 41A9726 ...
$79 .00
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Refurbished: 1Pcs for Optiplex7010PLUS Desktop Power Supply 3000 5000 7000MT 460W ...
$194 .00
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Refurbished: Server Power Supply X3650 M5 1300W 00Y9106 N33501L 00Y9107
$109 .00
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Refurbished: KHACHIMO CS24 -SC 1U 400W Switching Power Supply FS6011
$169 .00
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Refurbished: PBA1500F-48 Original Disassembly Miniaturized High Power Thin Power ...
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Refurbished: For AJ758-63001 HSV450 EVA8400 7G AJ758A 512731-001
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Refurbished: KHACHIMO Power Supply 652716-001 PS2329-YE 1-00075-04 1-00075-03
$999 .00
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Refurbished: 1Pcs for monitoring power supply DPS-200PB-208A video recorder host power ...
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Refurbished: KHACHIMO 77 75 73 82 73 14Pin 240W Power Supply 54y8874 54Y8897 ...
$69 .00
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Refurbished: KHACHIMO Power Supply For SPI 600W For SPI600GLN
$429 .00
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Refurbished: For power one 7.0A Power Supply For PFC500-1048F
$1,498 .70
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Refurbished: 1Pcs for DPS-500AB-22 M small 1U power supply FLEX ITX small chassis 500W ...
$149 .00
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Refurbished: TDK-LAMBDA HWS600 600W Power Supply HWS600-48/PV HWS600-48 PV
$2,698 .00
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Refurbished: BCH 8852 2880W Power Supply 39Y7350 39Y7349 AA23920L 39Y7364
$169 .00
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Refurbished: 1Pcs for chassis power supply GW-T200SPWC-TF GW-TFX200AHD
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Refurbished: For PRM400 PRM400 Power Supply
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Refurbished: 1Pcs for S681CR2450 24.5V 51A communication power supply 342401300
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Refurbished: 1PCS for 5796 Power Supply 7314-G30 300W 00FW759 44V4294 DPS-300AB
$250 .00
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Refurbished: 1PCS for 2960XR 3650 Power Supply PWR-C2-250WAC 341-0530 ...
$132 .00
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Refurbished: 1PCS for FSP400-702UJ server, power supply 400W
$235 .00
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Refurbished: T5600 T5610 D825EF-00 D825EF-01 H825ED-00 825W
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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.