Power Supplies - Showing 2089 - 2112 of 17940 Products

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Refurbished: KHACHIMO Power Supply For 12V29A 350W Power Supply S8FS-C35012-400
$659 .00
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Refurbished: KHACHIMO 450W Power Supply F1U450WPSU
$639 .00
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Refurbished: S1200 Storage Power Supply DS625-3
$229 .00
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Refurbished: Power Supply DPSN-66BP A HRS66-6000AD VC66B200AS GPL66-12ADH ...
$199 .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: For FSP250-50GUB FSP100-50GUB FSP150-50GUB FELX Small 1U Power ...
$81 .00
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Refurbished: 1Pcs for FSP090-ABBN2-M FSP120-ABAN2 FSP090-ABBN3-SAP FSP130-RBB ...
$119 .00
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Refurbished: KHACHIMO X3100 M4 M5 350W Power Supply DPS-350AB-16 B ...
$149 .00
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Refurbished: 1500 24V/50A 230Vac For ELTEK Power Supply Module 241114.300
$429 .00
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Refurbished: Power Supply Module 1450W 48V 25A HD4825-3
$258 .00
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Refurbished: 3620i DC48V 700W Switching Power Supply H700ED-S0 0C0X78
$398 .00
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Refurbished: PSU For SEVENTEAM 750W Power Supply ST-750P-AF
$549 .00
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Refurbished: 1PCS for R410 R415 D480E-S0 DPS-480CB A 0H410J Server Power Supply
$132 .00
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Refurbished: For PSL125-A 12.2V10.25A switching power module
$206 .00
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Refurbished: KHACHIMO 300W Medical Power Supply LCM300N
$999 .00
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Refurbished: KHACHIMO Power Supply 400W Switching Power Supply P2H-5400V
$579 .00
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Refurbished: 071-000-460 7000958-Y000 CX3-80 1200W HJ75
$229 .00
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Refurbished: EX4300-48P 550W Power Supply JPSU-550-DC-AFO 740-046875 DPS-550RB ...
$2,099 .00
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$2,099 .00
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Refurbished: Server Power Supply FSP100-1E02 (PSC100-A)
$149 .00
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Refurbished: DL380P360E G8 750W Platinum Power Supply DPS-750AB-3A 12V 60A 750W
$79 .00
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Refurbished: For Communication Power Monitoring Module SMU01A
$268 .80
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Refurbished: Power Abelcom PWS-801-1R 800W x2 Redundant Power Supply (1+1)
$179 .00
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Refurbished: Industrial Power Supply FSP400-60AGGBQ 400W Can Replace FSP400-60PFI
$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.