Power Supplies - Showing 2305 - 2328 of 17933 Products

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Refurbished: 8 serial port SFXA5201B hard disk recorder power supply DS-8632N-E8/K8 host
$89 .00
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Refurbished: For FSP600-80PSA (SK) FSP700-80PSA (SK) SFX SS-300SFD Power Supply
$323 .00
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Refurbished: PC PSU For 3Y 1000W Power Supply YM-8102A FSP1000-12ACB
$489 .00
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Refurbished: 1Pcs for S7700/S9700 switch 2200W AC power module W2PSA2230
$147 .00
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Refurbished: 1PCS for 12V97A 1200W PS-2112-5L Server Power Supply
$73 .00
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Refurbished: For 02130985 X6000 RH2485V2 RH5885V3 1200W power supply PS-2222-3H
$103 .00
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Refurbished: KHACHIMO 4506 8677 HS20 2000W Switching Power Supply DPS-2000BB A ...
$329 .00
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Refurbished: KHACHIMO NV-175 175W Power Supply NV1-4G5TTH-F
$3,599 .00
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$3,599 .00
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Refurbished: 12V13A 156W Power Supply PA-1151-2 34-0967-01/02/03 34-0967
$129 .00
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Refurbished: Server Power Supply for DL380 G4 406393-501 321632-501 367238-001 ...
$99 .00
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Refurbished: 1PCS for ST-460USE/350UAC 1U Industrial Firewall Server Power Supply
$191 .00
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Refurbished: 12-pin + 4-pin With Graphics Power Supply FSP500-50AAGA FSP500-50AGPAA ...
$65 .00
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Refurbished: For PS-2801-22T 800W
$162 .00
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Refurbished: For 10-pin power supply HK350-12PP PCE026 FSP250-30AGBAA
$70 .00
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Refurbished: For M8000/M9000 Power Supply CA01022-0680 371-2227-05
$662 .00
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Refurbished: For Aruba JL086A HPE switching power supply DPS-650AB-5 P/N: 0957-2475
$412 .00
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Refurbished: For AG637-63601 460581-001 EVA4400 HSV300
$132 .00
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Refurbished: KHACHIMO ITX FLEX HTPC K39 49 M34 41 99 T34 R47 44 A35 S3 ZS-A4 G5 Small ...
$159 .00
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Refurbished: KHACHIMO EliteOne 800 G3 180W Switching Power Supply DPS-180AB-28 A ...
$99 .00
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Refurbished: SPR2C620 SPR1C620 Array Networks APV 3520 5200 620W Switching Power ...
$299 .00
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Refurbished: For THERMO EOS Switching Power Supply LFWLT150-1003-K
$529 .00
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Refurbished: PSU For SEVENTEAM 750W Power Supply ST-750P-AF
$549 .00
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Refurbished: For Sun StorEdge6130 5300 Power Supply Model: AA21660 300-1708
$132 .00
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Refurbished: 12V13A 156W Switching Power Supply TN09-0156-01 460-112+0158
$499 .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.