Power Supplies - Showing 2329 - 2352 of 18358 Products

Filter (0)
Refurbished: PBA600F-24 600W INPUT AC100-240V 50-60Hz 8.2A OUTPUT 24V 27A Power ...
$599 .00
Free Shipping
Refurbished: Power Supply For SMU01C
$439 .00
Free Shipping
Refurbished: For NetApp FAS270 Power Supply, GF270 FAS250 PN: X511A-R5 114-00012
$220 .00
Free Shipping
Refurbished: 2904600 Power Supply Unit - QUINT4-PS/1AC/24DC/5
$329 .00
Free Shipping
Refurbished: 123W Power Supply E123609A
$389 .00
Free Shipping
Refurbished: For N2P Power Supply For XL125-12CS(XL125-3) 400004-01-6 JO4134W
$799 .00
Free Shipping
Refurbished: KHACHIMO 80plus Gold 550W Switching Power Supply GPS-550LB G
$319 .00
Free Shipping
Refurbished: 1PCS for DPS-300AB-58 B MATX SXX Mini 300W Small Power Supply
$82 .00
Free Shipping
Refurbished: 1Pcs for CRPS1300D 1300W server power supply
$194 .00
Free Shipping
Refurbished: 02312VFB power supply PDC1800S12-B1 switch power supply 1800W DC
$179 .00
Free Shipping
Refurbished: 1PCS for EFRP-553V3 Redundant Power Supply Module EFRP-553 ...
$118 .00
Free Shipping
Refurbished: 1Pcs for FSP1200-20FM server power supply 1200W power supply 9PA12A2700
$254 .00
Free Shipping
Refurbished: PSU For POWERLD 10V20A 200W Power Supply GZT-H200S10
$99 .00
Free Shipping
Refurbished: KHACHIMO 1500W Power Supply VS1-L3-02 73-180-4035CE
$2,399 .00
Free Shipping
$2,399 .00
Sold by: Magicpower
Refurbished: 1Pcs for R4850G6 R4850G2 Communication Power Module 48V50A 3000W
$298 .00
Free Shipping
Refurbished: For IPC3000 power supply GW-A350BDWB-AA 350W
$176 .00
Free Shipping
Refurbished: For 5260 7460 All-in-One Power Supply 115W AC155EBA-00 APH002 ...
$103 .00
Free Shipping
Refurbished: KHACHIMO Power Supply Power-One 150W Power Supply MPU150-4350
$339 .00
Free Shipping
Refurbished: For HG2-6300P AT SP2-4400F SP2-4250F HG2-6400P AT SP2-4400FB Power ...
$735 .00
Free Shipping
Refurbished: KHACHIMO Power Supply For TDK-LAMBDA 48V 55V 150W HWS150-48/DC ...
$599 .00
Free Shipping
Refurbished: 1pcs For DAE2P/3P 400W Power Supply PN: 071-000-532 071-000-410 ...
$71 .00
Free Shipping
Refurbished: For DPZ-48-40-4/iDCDU100D DC power supply block
$249 .00
Free Shipping
Refurbished: DL380 G6 G7 HSTNS-PC01 444049-001 437573-B21 451816-001 1225W
$129 .00
Free Shipping
Refurbished: V5 1500W Power Supply PS-2152-2H
$268 .70
Free Shipping

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.