Power Supplies - Showing 2065 - 2088 of 17942 Products

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Refurbished: KHACHIMO 150W Power Supply EUCO-150070FA EUCO-150050FA
$229 .00
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Refurbished: 1Pcs for ESR-48/56NC Power Module 48V50A DPR48/50C
$283 .00
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Refurbished: Power Supply HG2-6400P HG2-6350P HG2-6300P 400W ATX
$198 .00
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Refurbished: 1PCS for DL380 G6 G7 Server Power Supply DPS-460EB A
$73 .00
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Refurbished: Switching Power Supply For Weidmuller CP E SNT 250W 24V 10.5A 1202530000
$129 .00
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Refurbished: G9 DPS-1400CB A 733428-101 733427-001 720620-B21 Power Supply ...
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Refurbished: Switching Power Supply SUU180A-108
$429 .00
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Refurbished: For 01AF545 VRM Regulator Module P750
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Refurbished: KHACHIMO 12V 24V 500W Power Supply CL-A-500-12 CL-A-500-24
$199 .00
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Refurbished: For POWEREX LEGEND 800W ATX 12V V2.3 Power Supply REX90
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Refurbished: KHACHIMO X326M X325 411W Switching Power Supply API3FS10 74P4349 ...
$159 .00
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Refurbished: 1PCS for 400W FSP400-601UG dual-channel server 1U industrial control power ...
$176 .00
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Refurbished: XW8400 XW9400 TDPS-825AB B 405351-003 408947-001 825W
$79 .00
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Refurbished: KHACHIMO TM-350 PC-015 Wide Voltage Small Power Supply 80LPLUS
$99 .00
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Refurbished: T5610 T3610 685W YP00X D685EF-00 0WPVG2 Power F685E
$259 .00
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Refurbished: E74S E75S H3060 F5060 M310 M410 M610 M90 M4600s m700 10Pin 180W ...
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Refurbished: For RMX508 1500 1800 2000 Power Module PWS-742P-1R
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Refurbished: DC Module TZD900-48S300
$189 .00
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Refurbished: 1pcs for FSP500-60GHC Industrial Computer Power Supply FSP350-60GHC
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Refurbished: 1Pcs for T5600/T5610 825W Power Supply D825EF-00 H825EF-00
$150 .00
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Refurbished: 1pcs for power supply JPSU-920-AC-AFO DPS-920AB PN:640-060601 switch ...
$328 .00
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Refurbished: 1PCS for Power supply DPS-2500BB A 39Y7405 39Y7400 2320W
$147 .00
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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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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.