Power Supplies - Showing 2185 - 2208 of 17945 Products

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Refurbished: 1Pcs for FSP200-55SFX Micro-atx small power supply. FSP250-55SFX
$88 .00
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Refurbished: For GIN-38000V Xinju R2G-5800V 800W ZI
$299 .00
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Refurbished: 1pcs for T5-4 T5-8 SPAORCL-01G 7068817 7081596 7302922 3060W power ...
$448 .00
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Refurbished: KHACHIMO 8183 8320 8172 A50 S50 865 200W Power Supply API2PC23 ...
$89 .00
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Refurbished: For PSL520-AD GPL550-ADH 5120
$220 .00
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Refurbished: 1Pcs for SMU01A Power Monitoring Module
$657 .00
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Refurbished: Power Supply Gen9 754381-001 723599-001 720479-B21 DPS-800AB-11 A ...
$119 .00
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Refurbished: 1Pcs for R48-3000e3 Communication Switching Power Supply Module
$179 .00
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Refurbished: For X236 power supply 74P4455 74P4456 39Y7344 39Y7343
$176 .00
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Refurbished: KHACHIMO T4-2 T4-4 X4-4 2060W Switching Power Supply 300-2159-06 ...
$359 .00
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Refurbished: KHACHIMO 870 875 880 900 GA1 500W Switching Power Supply PS-4501-2 ...
$189 .00
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Refurbished: 1pcs for W2PSD2201 S9712 S12710 2200W Power Module EPW40-48D-1
$147 .00
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Refurbished: 241114.601 FLAYPACK 2880 48V 2880W For Eltek Power Supply
$149 .00
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Refurbished: For T5600 T3600 635W NVC7F D635EF-00 Power Supply
$176 .00
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Refurbished: KHACHIMO XPS 2710 2720 235W Power Supply L235EA-00 53WG5 0N6G7 ...
$299 .00
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Refurbished: 260W Power Supply S26113-E502-V50 NPS-230CB A
$659 .00
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Refurbished: For GK-H240S12R24-B (12V, 24V switchable)
$118 .00
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Refurbished: ADA600F-36-R Original Disassembly Switching Power Supply36V/20.5A 600W
$199 .00
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Refurbished: KHACHIMO L1200 L1210 L1320 L1700 220W Power Supply L220AS-00 ...
$52 .00
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Refurbished: 1PCS for FSP1200-20ERM RG-PA1200I-F S6920 S6910 switching power ...
$279 .00
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Refurbished: For PM-S50AC150W PM-AC150W power supply 5800 switch using ...
$162 .00
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$162 .00
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Refurbished: 2000W Power Supply 341-1800-01 NXA-PAC-2KW-PE
$479 .00
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Refurbished: For PE750 Server Power supply H-P-U280EF3 W5916 P8823 F1265
$191 .00
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Refurbished: KHACHIMO 6600 8600 920 330 320 10Pin 500W Power Supply ...
$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.