Power Supplies - Showing 2257 - 2280 of 17943 Products

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Refurbished: 1pcs for DPS-800AB-15 A S2F 800w Switching Power Supply
$368 .00
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Refurbished: S13-800P1AB 1U Server Power Supply 800W Dual 8-pin
$179 .00
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Refurbished: Gen10 500W Power Supply 865408-B21 865398-001 866729-001
$169 .00
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Refurbished: For MKP601 Switching Power Supply SWAD601M30 Server Power Module ...
$162 .00
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Refurbished: 1pcs for FSP400-80AGNBR 400W Power Supply
$642 .00
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Refurbished: For YH-5501ACR 500w YM-5501A server power supply
$132 .00
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Refurbished: KHACHIMO R210 R220 250W Power Supply N250E-S0 NPS-250NB A 6HTWP ...
$149 .00
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Refurbished: 5V10A 12V6A 24V9A 360W Power Supply MH-AT360-24V
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Refurbished: ML110G1 Server Power Supply PN 348626-001 DPS-350NB D
$139 .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: For S8PS-10024C Switching Power Supply
$426 .00
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Refurbished: For EFRP-603 600W Server Power Supply EFRP-603-A21 1pcs
$176 .00
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Refurbished: KHACHIMO 2U 800W Switching Power Supply ENH-2180-1
$349 .00
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Refurbished: For V20z server power supply U88S001.00 API4FS07 370-6636
$176 .00
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Refurbished: KHACHIMO Power Supply For Skynet 12V 130W Power Supply SNP-Z107-M
$899 .00
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Refurbished: Fo PC150B-1
$176 .00
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Refurbished: 1Pcs for PCH018 PA-1181-7 510S M4000q M420 Chassis Power Supply
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Refurbished: KHACHIMO WS-C2960XR-24TS 250W Power Supply PWR-C2-250WAC ...
$539 .00
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Refurbished: R510 R910 Z1100P-00 7001515-J100 Server Power Supply 1100W
$139 .00
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Refurbished: 1PCS for 300W power supply 1U SPI3001UH server industrial computer with -5V ...
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Refurbished: 1PCS for I420 I620 G30 CRPS550N2 C Server Redundant Power Supply Module ...
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Refurbished: Power Supply F5 1600 3600 3900 300W Power Supply FNP300-1012S144G ...
$249 .00
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Refurbished: 1PCS for ST-250UAE-05E 250W FLEX Small 1U Industrial Control Power Supply
$147 .00
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Refurbished: For ir358 608 i1345 3550 HK280-86FP FSP180-50PLV/NPL PC9028/9029
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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.