Power Supplies - Showing 2233 - 2256 of 17933 Products

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Refurbished: 1PCS for C2W-3820V-R industrial computer, server 820W equipment power ...
$250 .00
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Refurbished: 1Pcs for 5280M6 5270M6 800W Great Wall Power Supply GW-CRPS800N2W
$104 .00
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Refurbished: Communication Power Module W1PA02NF0
$389 .00
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Refurbished: 1Pcs for ASR1001-X-PWR-DC EDPS-400BBE 341-0607-01 Power Module
$750 .00
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Refurbished: 1Pcs for server power supply DS850-9-401 48V 17.5A
$194 .00
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Refurbished: 1Pcs for OPM120 power supply 48V6000W DMA-48-6KW DPU120D
$567 .00
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Refurbished: Power Supply TURBO-COOL Peak 650W Power Supply TURBO-COOL 510 ...
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Refurbished: 1PCS for X3400 X3500 X3650 Server Power Supply 835W 24R2730 24R2731
$73 .00
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Refurbished: For 02JG628 CFF750 SR550 SR650 SR590 Server 750W Power Supply
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Refurbished: For DL180 160 80 G9 550W Power Supply HSTNS-PL53 766879-001 ...
$132 .00
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Refurbished: MS2520F MS3300 MS3000 450W Power Supply DPS-450KB E
$389 .00
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Refurbished: For C2W-3820V-R Industrial Computer Equipment Power Module
$369 .00
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Refurbished: 1PCS for RG-M6220-AC460E-F switch server power supply 460W
$176 .00
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Refurbished: 1PCS for MINI Chassis Desktop Power NAS
$73 .00
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Refurbished: For Lambda Industrial Medical Equipment Power Supply 24V2.1A(2.52A) ...
$129 .00
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Refurbished: KHACHIMO Power Supply For IPD 5V 6A +15V 2A -15V 2A 70W For REL-70-3002
$639 .00
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Refurbished: 1Pcs for DZY-48/50S/DZY-48/50SI/DZY-48/75S Rectifier ...
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Refurbished: 1PCS for F5 2000S BIG-IP 4000S PWR-0187-04/05/06/02 SPAFFIV-03G
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Refurbished: KHACHIMO 600 680 800 880 G2 280W Power Supply PCE015 PCE016 ...
$69 .00
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Refurbished: For DL580 G7 1200W Server Power Supply HSTNS-PL11 490594-001 ...
$103 .00
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Refurbished: KHACHIMO 1U 200W Switching Power Supply HK300-11UAP
$259 .00
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Refurbished: 1Pcs for 220S 230S 560S 620S TFX0250P5W Desktop Small Chassis Power ...
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Refurbished: For Z420 Power Supply DPS-600UB A 623193-001/003 632911-001/003
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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.