Power Supplies - Showing 2281 - 2304 of 17979 Products

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Refurbished: 1PCS for CRPS800N2C RG-PA800I-F 800W switching power supply
$294 .00
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Refurbished: 1PCS for MPI-925A Industrial Computer Server Industrial Power Supply
$191 .00
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Refurbished: KHACHIMO T3620 T1700 T20 3670 3020 7020 9020 8Pin 600W Switching Power ...
$239 .00
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Refurbished: For R2W-6500P 500W + 500W Redundant Power Supply
$397 .00
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Refurbished: 1PCS for 2000W Power Supply D2000E-S2 DPS-2000EB-2A XYK93 0960VR
$147 .00
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Refurbished: For AP088B Switching power supply 4.6-5 V40A
$206 .00
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Refurbished: 1Pcs for D1K5E001H CZ309-60068D14-1K51A power supply 1500W
$642 .00
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Refurbished: For DS650-3-006 850W DS650-3 extreme x650 switching power supply
$132 .00
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Refurbished: 1600W Power Supply EMC-S-1600ADE00 071-000-701-01
$539 .00
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Refurbished: For TC4600 TC6600 Tool Case Server Power Supply DS 2000-3 - 002 2000W
$323 .00
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Refurbished: KHACHIMO 3020 7020 9020 255W Power Supply L255AS-00 AC255ES-00/01 ...
$59 .00
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Refurbished: server power supply PSSF132202A H79286 12V 108A
$179 .00
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Refurbished: KHACHIMO ProDesk 600 680 800 880 G2 280W Power Supply 796418-001 ...
$69 .00
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Refurbished: KHACHIMO For CONDOR Power Supply MSP1612
$659 .00
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Refurbished: For HK300-41DP Power Supply MATX2004 MATX-2000 MATX-2403 ...
$81 .00
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Refurbished: For AIN-3400P 400W power supply
$588 .00
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Refurbished: KHACHIMO 4200V 0.35A 1800W For WepeX 1800W
$499 .00
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Refurbished: For Juniper EX4300 Power Supply JPSU-350-AC-AFI 350W
$199 .00
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Refurbished: 1Pcs for 468929-004 508148-001 DPS-850DB A 850W Z800 Workstation ...
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Refurbished: DPS-230LBAPB PC7066 Pc7041 API4PC49 Host Power Supply 230W
$99 .00
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Refurbished: For GPAD201M5-1F switching power adapter 4.6V0-30A special power supply ...
$169 .00
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Refurbished: 1pcs for W2PSD2201 S9712 S12710 2200W Power Module EPW40-48D-1
$147 .00
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Refurbished: For C3700 power supply 0950-2877 700444-001 main board ...
$338 .00
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Refurbished: 1Pcs for monitoring video recorder power supply DPS-200PB-185A KSA-300S2 ...
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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.