Power Supplies - Showing 2257 - 2280 of 17943 Products

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Refurbished: HK353-11UEP 250W Network Industrial Control Server 1U Power Supply
$149 .00
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Refurbished: 1PCS For Server power supply 1800W 4F3WN D1800E-S0 16th generation R660 ...
$485 .00
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Refurbished: KHACHIMO FLEX Small 1U 100W Switching Power Supply FLXA5101A 07E1
$139 .00
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Refurbished: For FSP060-1AD101C KPL-060F FSP048-RHAN2 FSP030-RHAN2 Power Supply
$118 .00
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Refurbished: 12V 2.5A 30W Power Supply For LCA30S-12
$179 .00
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Refurbished: PDC-350WA-F S6720 Switching Power Supply
$239 .00
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Refurbished: KHACHIMO Small 1U Rated 220W Peak 300W Switching Power Supply ...
$89 .00
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Refurbished: 1Pcs for C3KX-PWR-715WAC power supply 3560X/3750X
$119 .00
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Refurbished: 1PCS for AS-550 550W desktop computer, power supply 600W
$118 .00
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Refurbished: KHACHIMO Industrial computer power supply SH300A8H+P4 ENH-0135
$138 .00
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Refurbished: SWS300 24V13A 300W Power Supply SWS300-24
$899 .00
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Refurbished: For 14 pin 280W power supply H530 M8400T TS230 ...
$79 .00
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Refurbished: For EPW750-12A 02310QWX 750W RH2288H 1288 RH5885V3 Server Power ...
$118 .00
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Refurbished: For FSP400-60WSA-5K FSP600-50UEB FSP400-602UE Power Supply
$323 .00
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Refurbished: For ATNG GD2U-850W-G 2U Server 850W Intelligent Power Supply
$148 .70
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Refurbished: 1pcs for S4875G6 4000W S4875G1 power
$970 .00
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Refurbished: GEN9 735040-001 735051-401 754382-001 720480-B21 HSTNS-PF46 800W
$229 .00
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Refurbished: KHACHIMO NPS-420AB D Industrial Server Power Supply D45629-001 ...
$229 .00
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Refurbished: For PS-2801-9LR Server 800W Power Supply
$220 .00
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Refurbished: 1PCS for FSP210-1F01 DPSN-210CB A PSL210CB A power supply
$250 .00
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Refurbished: 1PCS for Monitoring power supply FSP220-20FGBBD + 53v -53v power supply
$118 .00
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Refurbished: 470W Power Supply PCSA-470P-X2S PCSA-470P-E2J1
$729 .00
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Refurbished: 1PCS for N18010 switching power supply RG-PA1600I module 1600W ...
$632 .00
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Refurbished: 1pcs for HK400-74PP FSP300-10TGBAA6 pin small chassis power supply PA- ...
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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.