Power Supplies - Showing 2377 - 2400 of 17945 Products

Filter (0)
Refurbished: KHACHIMO 130W Power Supply Borad VLT130-1100
$4,899 .00
Free Shipping
$4,899 .00
Sold by: Magicpower
Refurbished: KHACHIMO LFA15F 5V3A 15W Power Supplly LFA15F-5-SNJ1 LFA15F-5-SN ...
$649 .00
Free Shipping
Refurbished: KHACHIMO PSU For FSP DS600-G10 250W Switching Power Supply ...
$459 .00
Free Shipping
Refurbished: For RMX508 1500 1800 2000 Power Module PWS-742P-1R
$250 .00
Free Shipping
Refurbished: 1pcs for FSP120-ABCN2 FSP120-ABAN2 FSP090-ABAN2 FSP090-ABBN2 19V ...
$149 .00
Free Shipping
Refurbished: KHACHIMO 48V1.25A 60W Power Supply TN13-0060-48
$199 .00
Free Shipping
Refurbished: PBA600F-24-XAACC 100-240Vac 50-60Hz 8.2A Switch Power Supply
$459 .00
Free Shipping
Refurbished: For industrial computer power supply FSP ATX3500-65PA300W
$109 .00
Free Shipping
Refurbished: DPS-770GB A Switching Power Supply DPS-770AB-1A
$259 .00
Free Shipping
Refurbished: 1Pcs for T5820 T7820 Power Supply 950W AC950EF-00 H950EF-00 WGCH4
$209 .00
Free Shipping
Refurbished: For FSP400-701US P2M-5800V P2P-5700P HU2-5860V MRG-5800V4V Power ...
$735 .00
Free Shipping
Refurbished: KHACHIMO 7000 9000 Rated 400W Peak 500W Switching Power Supply ...
$99 .00
Free Shipping
Refurbished: 1Pcs for 10 pin power supply 500W FSP500-20AGPAA PCK010 HK600-11PP ...
$146 .00
Free Shipping
Refurbished: W0PSA1703 switching power supply ME170-12A-3
$179 .00
Free Shipping
Refurbished: Z PRO 9228 815W Switching Power Supply AP15FS20 API5FS20 39Y7272 ...
$199 .00
Free Shipping
Refurbished: 1Pcs for X4270 N4288 E450 Power Supply FSP500-20TGBAA D17-180P1A 500W
$118 .00
Free Shipping
Refurbished: 1PCS for KSF-275F4 275W 8632N 8664N
$103 .00
Free Shipping
Refurbished: KHACHIMO 1U MS04 Rated 300W Peak 450W Switching Power Supply ...
$128 .00
Free Shipping
Refurbished: 1Pcs for JPSU-850W-DC-AFI 740-053639 power supply
$388 .00
Free Shipping
Refurbished: For R360 Server Power Supply DPS-730AB A 730W D37235-001
$162 .00
Free Shipping
Refurbished: For XP Power Supply For XP CCM250PS24-XB0296
$899 .00
Free Shipping
Refurbished: For CSU550AP-3-100 550W server power supply
$103 .00
Free Shipping
Refurbished: PWR SUPPLY, 85W, HP-P1457F3 REV.H04, DP/N 0008765D
$155 .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.