Power Supplies - Showing 2089 - 2112 of 17942 Products

Filter (0)
Refurbished: Power Supply Module For ER11020/T
$111 .00
Free Shipping
Refurbished: KHACHIMO 400W FSP400-60THN-P WS-843AW Industrial Control Computer ...
$139 .00
Free Shipping
Refurbished: KHACHIMO QFX10008 10016 3000W For DPS-2850AB A QFX10000-PWR-AC ...
$4,999 .00
Free Shipping
$4,999 .00
Sold by: Magicpower
Refurbished: KHACHIMO M800 810 8350 9550Z AIO700 6Pin 180W Power Supply APE0C4 ...
$149 .00
Free Shipping
Refurbished: KHACHIMO 48V 0.65A 30W Power Supply PBA30F-48-N PBA30F-48 PBA30F
$799 .00
Free Shipping
Refurbished: KHACHIMO 3000W Power Supply AA23200 341-0077-05
$699 .00
Free Shipping
Refurbished: 1pcs for FSP800-20FM/FSP550/FSP1200/FSP2000/FSP1600/FSP800-50FS
$194 .00
Free Shipping
Refurbished: 1pcs For T640 R840 R940 T640 R830 1600W Server Power Supply D1600E-S0
$118 .00
Free Shipping
Refurbished: 1Pcs for AuroraR5 R6 R7 R8 R9 XPS8930 850W 1000W Power Supply
$313 .00
Free Shipping
Refurbished: 1pcs for P2F-5500V 500W Server Power Supply
$239 .00
Free Shipping
Refurbished: 1PCS for 02JE812 01YM292 V7000 G3 2076-724 Power Supply
$691 .00
Free Shipping
Refurbished: 1PCS for 1u400W HK354-11UEP FSP350-601U Industrial Control Server Power ...
$90 .00
Free Shipping
Refurbished: KHACHIMO PSU For Seasonic AI 1000W Switching Power Supply SSP-1000RS ...
$849 .00
Free Shipping
Refurbished: 1Pcs for GL350AAANA 12-32VDC 350A lithium battery, contactor
$72 .00
Free Shipping
Refurbished: 1Pcs for R4875G1 Communication Power Module 85-300V
$254 .00
Free Shipping
Refurbished: ML330 G3 PS-5032-2V3 319640-001 324714-001 300W Server Power Supply
$139 .00
Free Shipping
Refurbished: 1Pcs for RRU5268e-d power supply
$791 .00
Free Shipping
Refurbished: TP4830H Wall Mounted Communication Power Cabinet 48V30A
$679 .00
Free Shipping
Refurbished: DPS-150AB-10 A JPSU-150-AC-AFO EX3400 150W AC Power Supply
$339 .00
Free Shipping
Refurbished: 1PCS power supply for P1A-N10190-S-F2 FLXA2191A
$103 .00
Free Shipping
Refurbished: For 46X5668 09N0P4 0HKP50 46X666 400/800GB LTO3 SAS
$588 .00
Free Shipping
Refurbished: for DPS-800AB-1 A S26113-E574-V53 800W
$159 .00
Free Shipping
Refurbished: GEN9 735040-001 735051-401 754382-001 720480-B21 HSTNS-PF46 800W
$239 .00
Free Shipping
Refurbished: For YM-4151A host power supply 3Y HDX6000 7000 HDX8000
$162 .00
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.