Power Supplies - Showing 2089 - 2112 of 17942 Products

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Refurbished: SPS03-5V 2VAA008280R001 7760052240 5V 60A For ABB Switching Power ...
$199 .00
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Refurbished: For R510/R910 Server, Power Supply 750W 6GTF5 CPS750-D121 Spot
$206 .00
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Refurbished: KHACHIMO 400 480G1 G2 Power Supply DPS-300AB-73 A DPS-300AB-72 A ...
$79 .00
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Refurbished: T321730101 TSI-EPC-48VDC-230VAC-BRAVO Power Supply For PACK 48VDC ...
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Refurbished: KHACHIMO COLDWATT 650W Switching Power Supply ...
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Refurbished: KHACHIMO 3200W Power Supply TNV1APSU
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Refurbished: 1PCS for PS-2112-2M 12V90A 1100W Gold Power Supply
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Refurbished: 1pcs for WAVE-594-K9 Power Supply FS1002 74-9538-01 PWR-WAVE-450W ...
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Refurbished: DL160 360 380 388 G6 G7 G8 460W Changeable 12V Power Supply
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Refurbished: C7000 Server Power Supply 2450W 570493-301 570493-001 588733-001
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Refurbished: KHACHIMO W510 W520 300W Power Supply DPS-300AB-56 A ...
$499 .00
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Refurbished: 1PCS for X3550/X3650M5 550W 750W 900W Power Supply 00YL553 00YL557 ...
$544 .00
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Refurbished: 1PCS for RG-PA800IF Power Supply RG-S8606/S8610/S8614
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Refurbished: 1370040010 For Weidmuller Uninterruptible Power Supply CP DC UPS 24V 40A
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Refurbished: 1PCS for U1A-D1600-G 1U Server Redundant Power Supply Module 1600W ...
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Refurbished: 1PCS for FSP350-20GSV DPS-300AB-81B
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Refurbished: SBE-720E-7226T-T2 Hot Plug 2500W Power Supply PWS-2K53-BR 720E-R75
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Refurbished: G10 500W Power Supply 865408-B21 865398-001 866729-001 865399-101
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Refurbished: KHACHIMO SR860 1100W Switching Power Supply FSF056 700-014189-1500
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Refurbished: PA550E 5FX5K 420W 071-000-562 Work Good
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Refurbished: L255EM-01 K340R F255E-00 9RD1W OptiPlex 980 MT Power Supply
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Refurbished: 1PCS for 80Y9081 60Y0621 39Y9661 39M4945 44X3058 80Y9080 module
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Refurbished: 1Pcs for AYL060P-036V DC 36V1.67A
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Refurbished: MA356 DPS-980AB A 614-0383 980W Ma970 A1186
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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.