Power Supplies - Showing 2329 - 2352 of 17988 Products

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Refurbished: M1R-2600K2 600W Server Redundant Power Module
$289 .00
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Refurbished: 1PCS for 250W power supply with -5V power supply FSP250-70PFU 610L 610H ...
$73 .00
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Refurbished: 1Pcs for FIC-48-LPS-250D FIC-24-LPS-250D AP-P4ATX60FE Industrial ...
$343 .00
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Refurbished: For 8864N-R8 power supply SFXA5201C SFXA5201B SFXA5061B power supply ...
$87 .00
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Refurbished: Aio OptiPlex 9010 9020 2330 200W Power Supply L200EA-01 0CJ4XJ
$89 .00
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Refurbished: 1PCS for Power supply GW-EPS2U650W I420R/I620R-G10
$103 .00
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Refurbished: For PS3116-02 4818A020 Power Supply
$265 .00
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Refurbished: KHACHIMO NPS-420AB D Industrial Server Power Supply D45629-001 ...
$229 .00
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Refurbished: R520/R620/R720XD 1100W power supply 0NTCWP 0YT39Y 0GYH9V 0GDPF3
$120 .00
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Refurbished: 1pcs for V890 Server Power Supply 1629W 300-1622 300-1866
$298 .00
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Refurbished: 1PCS for PS-2551-7L 12V 45A 550W power supply
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Refurbished: For 500W computer power supply RTX4060
$118 .00
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Refurbished: D650 D850 X4660G Power Supply PA-1181-10AC PA-2251-2AB
$99 .00
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Refurbished: KHACHIMO 250W Switching Power Supply SS-250TFX
$159 .00
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Refurbished: KHACHIMO 700W Power Supply DPS-700AB-2 A DPS-700AB-2A
$359 .00
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Refurbished: Power Supply 1100W FSK014 02JJ207 SP57A63890
$269 .00
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Refurbished: 1pcs for PAC3000S12-BH 3000W Server Power Supply 12V 240A
$191 .00
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Refurbished: Workstation T5600 T3600 635W NVC7F D635EF-00 Power Supply
$221 .00
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Refurbished: H750EPS-00 7000 5000 T3660 Power supply 750W M92DC
$198 .00
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Refurbished: KHACHIMO Envy 700 460W Power Supply PCA246 DPS-460DB-5A 633187-002 ...
$122 .00
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Refurbished: 800W Switching Power Supply PWS-804P-1R
$698 .70
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Refurbished: 1pcs For DL580 G6 G7 1200W Power Supply 498152-001 490594-001 ...
$132 .00
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Refurbished: KHACHIMO 1U 400W Switching Power Supply ST-400UAG-05F
$249 .00
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Refurbished: For CX3-80 Management Module 100-561-334 100-561-085 NS80
$250 .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.