Power Supplies - Showing 2089 - 2112 of 17945 Products

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Refurbished: 1PCS for SS-400ES 400W industrial computer, power supply, dual 8P
$147 .00
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Refurbished: 1Pcs for DPS-90FB A JMW1150 KA2423F51 24V6.25A 24V150W Power Adapter
$149 .00
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Refurbished: RD650 450 350 TS560 FSD062 00HV188 Server Power Supply 450W
$259 .00
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Refurbished: Hot Server Power Supply EFRP-300 300W
$88 .00
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Refurbished: For E500 12-pin power supply 12 + 4p GW-CDM300SDA-TF D15-220P1A
$81 .00
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Refurbished: For DS-8016HF Power Supply PSF-200M4 DPS-80PB-10 A DPS-200PB-176 C
$88 .00
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Refurbished: KHACHIMO 12V25A Power Supply PQ60120QEB25NNH
$139 .00
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Refurbished: For MRT-6300P-R 300W Power Supply Module
$118 .00
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Refurbished: 1Pcs for B540P Power Supply FSP250-30SI DPS-250AB-84 APB001 HKF 2502-3
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Refurbished: X206m X3200 Server Power Supply 7001084-y000 39y7280 39y7281
$99 .00
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Refurbished: KHACHIMO E2700 725W Switching Power Supply X-48870-00-R6 TDPS-725AB ...
$750 .00
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Refurbished: 1PCS for P5 590 75F9283 41U0341 12R9038 45D6954 45D2508 Controller
$118 .00
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Refurbished: HD4850-2 48V 50A
$269 .00
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Refurbished: For 400 480 600 G3 G4 Power Supply DPS-500AB-51A L77487-003 L89233-001
$162 .00
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Refurbished: KHACHIMO Advantech 1U 150W Switching Power Supply P1U-6150P
$239 .00
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Refurbished: 06118Y Storage Power Supply EMA-BXG100-01-C017000224-0000
$229 .00
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Refurbished: YM-11-1825 675170-001 300W SX6025 SX6036 power supply
$259 .00
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Refurbished: KHACHIMO Power Supply STL1FANAF
$549 .00
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Refurbished: DL580 G5 DPS-1200FB A 441830-001 438202-001 440785-001 1200W ...
$89 .00
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Refurbished: 1Pcs for M10-1 Power Supply 7060781 7082782 7088116 DPS-770CB D
$418 .00
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Refurbished: 1PCS for 180W H180EBS-00 F3J97 NC77H AC180EBS-00
$73 .00
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Refurbished: SUN Ultra45 U25 U20 1000W Power Supply API4FS35 API4FS35-470G ...
$369 .00
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Refurbished: Power Supply For FS40-7608 100-240VAC AC-CD 5V+-12V
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Refurbished: Power Supply For AMU02C
$299 .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.