Power Supplies - Showing 2089 - 2112 of 17941 Products

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Refurbished: 1pcs for 01DC150 01DC149 SP-PCM02-HE580-AC DS6200 DS2200 584W ...
$448 .00
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Refurbished: For Z4 G4 Workstation Power Supply, 750W, 851382-001, DPS-750AB-36 A
$209 .00
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Refurbished: 1PCS for 44V7292 44V5185 44V3559 44V495 P6 550 7001352-Y000 Power ...
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Refurbished: B320 B340 B545 Power Supply FSP200-20SI PS-3251-01 DPS-250AB-71A
$79 .00
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Refurbished: Goldpower Switching Power Supply GPAD181M28-4A
$1,499 .00
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$1,499 .00
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Refurbished: KHACHIMO 1620-G20 550W Switching Power Supply R1CA2551B
$239 .00
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Refurbished: For Power Module HPSL520-AD
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Refurbished: ML350G4P Server Power PS-3701-1C 406413-001 382175-501
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Refurbished: T5140 t5120 X4170 760W Power Supply 7001497-J000 300-2143 300-2233
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Refurbished: R-Senda Umecopy Golden COPY Rated 400W Peak 480W Power Supply ...
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Refurbished: KHACHIMO 7000 9000 400W Power Supply FSP400-60AGBAK
$259 .00
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Refurbished: 1Pcs for Z8G5 workstation power supply D20-1K1P1A M25918-002 ...
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Refurbished: 1pcs for DBU50B-N12A1N12A2 DPU40D DPU60D
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Refurbished: 1Pcs for 7040 3650 3040 3046 Power Supply H240EM-00 L240AM-00 B240NM-0
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Refurbished: KHACHIMO 300W Power Supply PC61I0011 PC6110011
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Refurbished: 1pcs for 3080 7080 7071MT Power supply H460EBM-00 L460EBM-00 ...
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Refurbished: For PBM400PQ04C-XA0155A Device Power Supply
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Refurbished: For 69Y5916 49Y7760 39Y7203 59Y6139 X3850X5 Power Supply ...
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Refurbished: For X3650M4 server power supply FSA011 94Y8105 94Y8104 550W
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Refurbished: FSA035 APM12V0307 Server 550W Power Module
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Refurbished: KHACHIMO 420W Switching Power Supply M1P-2420V
$1,199 .00
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$1,199 .00
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Refurbished: KHACHIMO 8852 2880W Switching Power Supply 39Y7364 39Y7349 39Y7409 ...
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Refurbished: 1pcs for FSP300-60GLC industrial computer power supply FSP300-60PFG ...
$104 .00
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Refurbished: For R730XD R720 R520 1100W E1100D-S0 05G4WK 0Y1MGX 02RN7
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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.