Power Supplies - Showing 2113 - 2136 of 17942 Products

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Refurbished: KHACHIMO RS6000 DS8100 288W Power Supply 3D51-25-2 00FW761 ...
$399 .00
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Refurbished: For DS-5000B 60-1000315-03 100-605-108 power supply
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Refurbished: 1PCS For G1136-0550WNA G1116-2000WNC G1116-1200WNB Server Power ...
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Refurbished: PE2950 Server Power 750W N750P-S0 NPS-750BB A NY526 JU081
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Refurbished: KHACHIMO 740 755 760 780 330 360 380 305W Power Supply N305E-00 ...
$269 .00
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Refurbished: KHACHIMO 3020 7020 9020 8Pin 290W Power Supply HU290AM-01 ...
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Refurbished: 1Pcs for P920 workstation power supply S26113-E564-V70-01 CPB09-045B ...
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Refurbished: 1Pcs for ATX-368 YKD-6250GYTL YKD-4300A PTE150-12A CRS-C8565-88 ...
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Refurbished: KHACHIMO 3020 9020 T1700 T3620 8Pin Power Supply 460W H290AM-00 ...
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Refurbished: KHACHIMO 33V 3A 100W For ECM100US33 ECM100US
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Refurbished: Workstation T5600 T3600 635W NVC7F D635EF-00 Power Supply
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Refurbished: KHACHIMO 375W Switching Power Supply M1Z-6375P3
$439 .00
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Refurbished: 7932 7816 200W Switching Power Supply DPS-200PB-176D DPS-200PB-176 D
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Refurbished: For SFXA5201A SFXA5201B SFXA5201C Hard Disk Video Recorder Power Supply
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Refurbished: 1PCS for C2100 server, power cage, power distribution port board, power ...
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Refurbished: 1PCS for 2000W power supply PWS-2K04-1R PWS-2K04A-240
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Refurbished: KHACHIMO CRPS 400W Power Supply ATN-5400V
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Refurbished: 1PCS for SBE-720E-7226T-T2 PWS-2K53-BR 720E-R75 Power Supply 2500W
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Refurbished: PJA150F-24 150W INPUT AC100-240V 50-60Hz OUTPUT 24V 6.4A Switching ...
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Refurbished: 1PCS for 10-Pin M410 M420 M415 Rated 260W Power Supply HK360-71PP ...
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Refurbished: For AP-400X FSP350-60GHC FSP300-60BTV (PF) APS-400S Power Supply
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Refurbished: KHACHIMO 850W Power Supply GW-TO850WDV53 GW-T0850WDV53
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Refurbished: D80807 800W Switching Power Supply DPS-800NB D S26113-E574-V52 ...
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Refurbished: 1Pcs for 10 pin power supply PCE025 HK360-71PP PCH015 PCK012 ...
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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.