Power Supplies - Showing 2353 - 2376 of 17938 Products

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Refurbished: KHACHIMO V3910 V3710 8Pin 260W Power Supply 07JGJF 7JGJF D260EBS-00 ...
$169 .00
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Refurbished: KHACHIMO Switching Power Supply For FSP 1U 250W Power Supply ...
$299 .00
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Refurbished: For YM-7501B Rack Server 2U 500W Power Supply
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Refurbished: For TPCM3000-ER-1079-R Server Power Supply SCE1010/2020 AC Power ...
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Refurbished: X3750 M4 1400W Power Supply DPS-1400BB A 69Y5948 69Y5949 69Y5912 ...
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Refurbished: For R350 T350 R660 R550 R450 700W Power Supply H700E-S1 X1FHX
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Refurbished: KHACHIMO PowerEdge SC1435 600W Switching Power Supply H600P-00 ...
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Refurbished: M830B Communication Power Monitoring Module
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Refurbished: For TC I-STAR TC-500R8A 500W Device Module Power Supply
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Refurbished: For B730E B530E S540 G540 PAC180S12-C Power Supply 180W Upgraded to ...
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Refurbished: Communication Power Module R48-2000e3
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Refurbished: For fspatx250w fsp200-50pla fsp180-50pla e200 1u power supply
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Refurbished: For BROCADE DCX 8510-8 2000W Power Supply AA25760L 23-0000067-01
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Refurbished: 1Pcs for SFF Power Supply H180AS-00 H180EBS-00 D180ES HU180NS ...
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Refurbished: For AP836B 592261-002 P2000 G3 MSA FC power supply module
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Refurbished: For FSP250-60PFN 300W C5102-0010 Device Power Supply
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Refurbished: For 8864N-R8 power supply SFXA5201C SFXA5201B SFXA5061B power supply ...
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Refurbished: For RDT-6250P-R 250W Server Redundant Power Module
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Refurbished: 1PCS for SA5212M4 Server CRPS550 Redundant Power Module 550/800W
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Refurbished: KHACHIMO 780W Switching Power Supply PWS-781-1S
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Refurbished: For SUN SPARC10 SPARCstation 10 Workstation Power Supply, ...
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$349 .00
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Refurbished: 1PCS for PSR1600C-12A-B switching power supply PSR1600C-12A-B-ZJ ...
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Refurbished: For MAP55-4003 POWER-ONE Switch Power Supply
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Refurbished: PJA150F-24 150W INPUT AC100-240V 50-60Hz OUTPUT 24V 6.4A Switching ...
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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.