Power Supplies - Showing 2353 - 2376 of 17990 Products

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Refurbished: DL380 G6 G7 HSTNS-PC01 444049-001 437573-B21 451816-001 1225W
$129 .00
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Refurbished: KHACHIMO NEC Express 5800 250W Switching Power Supply TG12-0250-01
$569 .00
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Refurbished: DC Screen Charging Module 11010-5 MR110-1500S-ZH 110V 10A
$149 .00
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Refurbished: S8VK-C24024 Switching Power Supply 240W/24V Output DIN-Rail
$99 .00
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Refurbished: 1Pcs for TC-400 P ATX ST-300ATXP4 FSP350-601U P4-310W FSP3501U Power ...
$194 .00
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Refurbished: KHACHIMO 1600W Power Supply DS1600SPE-3-407
$378 .00
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Refurbished: 1PCS for 12V45A 550W 7001676-J000 98Y8064
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Refurbished: 1pcs for ESR-48/56BC Communication Power Module DPR48/50-G-DGC ...
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Refurbished: 1pcs For PWS-1K62P-1R 1620W
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Refurbished: KHACHIMO 1U 400W Power Supply DPS-400BB A
$329 .00
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Refurbished: ES0W2PCD0150 Power Supply PWR150D
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Refurbished: 1pcs for ACDB220-63-12B
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Refurbished: 1Pcs for D430 D14-300P1A FSP300-40AABA HK400-11PP Desktop Power ...
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Refurbished: 1PCS for NF8480M3 TS860 GE SP810 SP0810-Z01A 800W Server Power Supply
$176 .00
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Refurbished: For V20z server power supply U88S001.00 API4FS07 370-6636
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Refurbished: For S814 S824 1400W Power Supply 7001692-J200 01AF591 01AF048
$368 .00
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Refurbished: K100A-24 Original Disassembly Switching Power Supply 24V/4.5A
$139 .00
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Refurbished: KHACHIMO PSU For FSP 80plus Gold 350W Switching Power Supply ...
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Refurbished: 3330 3340 3380 3085 Power Supply DPS-300AB-72A D11-300P1A PS-6301-8 ...
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Refurbished: 1PCS For 5300 DS-5100/5300 Power Supply SP640 60-0300031-02 ...
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Refurbished: KHACHIMO Dual CPU 8Pin Power Supply 600W Power Supply BTX-600SP ...
$429 .00
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Refurbished: For 512327-B21 750W 506821-001 511778-001 506822-101
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Refurbished: KHACHIMO WS-C3750G-12S-S 150W Power Supply PA-1151-2B ...
$169 .00
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Refurbished: 1Pcs for Z440 DPS-525AB-3 A 753084-001 758466 Power supply 525W
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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.