Power Supplies - Showing 2113 - 2136 of 17941 Products

Filter (0)
Refurbished: 1PCS for DPS-250AB-10B 8632N 8664N 8616N-I1616 disc recorder bit power ...
$118 .00
Free Shipping
Refurbished: RMC30A-2 Original Disassembly Switching Power Supply 100V input ...
$159 .00
Free Shipping
Refurbished: 1Pcs for SMU01C SMU01A Monitoring Module
$477 .00
Free Shipping
Refurbished: 1Pcs for SPI FSP FSP300-60PFN (12V) industrial server power supply
$149 .00
Free Shipping
Refurbished: 1Pcs for 5348 3340 Power Supply D185EA B185EA-00 H185EA
$85 .00
Free Shipping
Refurbished: 1PCS for Power supply TFXH5181A desktop 180w
$103 .00
Free Shipping
Refurbished: KHACHIMO PSU For FSP 350W Switching Power Supply SPR1C350 SPR2C350
$549 .00
Free Shipping
Refurbished: 1Pcs for GL250HTANA 24VDC coil 250A750VDC contactor
$103 .00
Free Shipping
Refurbished: 1PCS for 255 7040MTpowerSFF AC255ES-00 HU255AS-00 L
$73 .00
Free Shipping
Refurbished: KHACHIMO PS6210 PS6610 PS4210 Power Supply 0M1GDN
$159 .00
Free Shipping
Refurbished: 170W Power Supply H831PAIS ME170-12A-4
$489 .00
Free Shipping
$489 .00
Sold by: Magicpower
Refurbished: KHACHIMO 200W Switching Power Supply SPIII-2003-PB
$89 .00
Free Shipping
Refurbished: R630 R730XD R740 FX2S D1600E-S0 D1600E-S1 F1600E-S0 T4GCW D5W1N ...
$129 .00
Free Shipping
Refurbished: 1pcs for Z4G4 Z6G4 Power Supply 465W 750W 1000W DPS-750AB 851382-002
$255 .00
Free Shipping
Refurbished: PS4000 PS6000 Storage power RS-PSU-450-AC1N 64362-04D 440W
$89 .00
Free Shipping
Refurbished: For PFC375-4000 power supply
$588 .00
Free Shipping
Refurbished: KHACHIMO 3050 7050 5050 3668 3665 6Pin 180W Power Supply 82DRM ...
$99 .00
Free Shipping
Refurbished: For EPR-306 300W Disk Array Power Supply
$176 .00
Free Shipping
Refurbished: 1Pcs for RX1330M3M2 S26113-E575-V70 S13-450P1A 450W server power ...
$180 .00
Free Shipping
Refurbished: For RH2288HV5 RH1288HV5 server power supply 900W PAC900S12-BE ...
$220 .00
Free Shipping
Refurbished: 1pcs for AUP-X-300 (V3) -G02 industrial computer equipment power supply
$627 .00
Free Shipping
Refurbished: For UAD1TXXXX-2043 400W AV-2043
$368 .00
Free Shipping
Refurbished: 1Pcs for ESR-48/56A C Rectifier Module ESR-48/56AC Power Rectifier
$294 .00
Free Shipping
Refurbished: Power Supply DPS-300AB-101A DPS-300AB-81B
$119 .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.