Power Supplies - Showing 2329 - 2352 of 18360 Products

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Refurbished: For 00V7129 00V7130 DS3500 DS3512 45234-06
$118 .00
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Refurbished: KHACHIMO ACE300F 300W Power Supply AC3-MMVR-00
$3,299 .00
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$3,299 .00
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Refurbished: KHACHIMO GAVAZZI 24V2.5A 60W Power Supply SPD24601B SPD2460
$1,399 .00
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$1,399 .00
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Refurbished: KHACHIMO 3040 5040 7040 8Pin 180W Power Supply 5XV5K WYXT2 4R1KT ...
$69 .00
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Refurbished: KHACHIMO Power Supply For XP Power Supply 006-102365-01
$5,499 .00
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$5,499 .00
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Refurbished: For Sun 300-2186-02 Netra T5220 T5440 X4450 DC 660W
$179 .00
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Refurbished: For H3C psr350-a10 Power Supply
$368 .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: 1Pcs for 3710 3991 t3660 3000mt 5000mt 7000mt 1000w power supply
$343 .00
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Refurbished: For 9YA3501010 FSP350-60EVML 350W Power Supply
$382 .00
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Refurbished: 1Pcs for 48/2000 HE 241115.105 53.5V37.4A Rectifier Module
$368 .00
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Refurbished: DZY-48/15HIII 48V 15A Communication Power Rectifier Module
$88 .80
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Refurbished: For YM-2681HGR Server YM-2681H Redundant Power Module 700W
$139 .00
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Refurbished: For 600 HK600-11PEP Server Host Switch Power Supply 500W Dual 8-pin
$139 .00
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Refurbished: MHG2-6300P 300W Color Doppler Power Supply
$438 .00
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Refurbished: For DPS-450DP 450W 24p main board with 6p graphics card
$97 .00
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Refurbished: KHACHIMO BOX DC-ATX 16-24V 220W Power Supply Z4-ATX Z4-ATX-220 ...
$239 .00
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Refurbished: 1pcs for LMF1000-20B12 switching power supply, 12V output 80A, 100-240V.
$147 .00
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Refurbished: 627W Power Supply 700-015147-0000 81-00000154-00-01
$729 .00
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Refurbished: 1PCS for MX10003 740-066937 JNP-PWR1600W-AC-A 1600W network power ...
$632 .00
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Refurbished: 1Pcs for W2PSA0580 580W AC Power Module X7 S5700
$81 .00
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Refurbished: 1PCS for C6220/6105/8220/8/5000/5220 DPS-1200MB-1B/CD1200E-S2 ...
$118 .00
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Refurbished: For 400 480 600 G3 G4 Power Supply DPS-500AB-51A L77487-003 L89233-001
$162 .00
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Refurbished: 1PCS for 550W Power Supply 800 G5 Z1 G6 PCK026 L75200-004-001 ...
$132 .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.