Power Supplies - Showing 2209 - 2232 of 17942 Products

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Refurbished: For N2200-PAC-400W-B power supply
$132 .00
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Refurbished: For 390 790 9010MT Power Supply H265AM-00 AC265AM-00 053N4 GVY79
$103 .00
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Refurbished: 1pcs for RX2530 S26113-E574-V53 DPS-800AB-1 A Power Supply
$104 .00
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Refurbished: KHACHIMO 380G9 GEN9 800W Power Supply HSTNS-PL41 720479-B21 ...
$299 .00
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Refurbished: 1PCS for R2A-BV0350-N cage U1A-B10350-DR 350W redundant power ...
$191 .00
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Refurbished: RH2285V2 Server Power Supply 460W 02130957 DPS-460DB-12A
$79 .00
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Refurbished: 5V +12V -12V AC-DC Power Supply For SA40-1313
$349 .00
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Refurbished: 1Pcs for RG-M5000E-AC500P RG-S5750-48GT/4SFP-P switching power ...
$412 .00
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Refurbished: 1pcs for EMX0 00RR361 N46798 ECD15020034 MPS1025 1025W Power Supply
$328 .00
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Refurbished: KHACHIMO V440 680W Switching Power Supply DPS-680CB A 300-1851 ...
$269 .00
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Refurbished: For T350 R350 G6X Server Power Module R650FF3 D23019-008
$162 .00
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Refurbished: KHACHIMO FLEX Small 1U Rated 180W Switching Power Supply F-3000L ...
$129 .00
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Refurbished: For 470 450 D1257 H2370 D550P-00 DPS-550DB A Server Power Supply
$162 .00
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Refurbished: 1PCS for PCSA-300P-X2V Industrial Equipment Machine Power Supply
$338 .00
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Refurbished: For 3Y YM-4461A Server Power Module RAID Cabinet CP-1289R2
$499 .00
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Refurbished: DPS-625AB A T260 625W PSU 46U3215 46U3201 Power Supply
$159 .00
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Refurbished: 1PCS for PUI108E-2Z 100W
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Refurbished: 1Pcs for PowerEdge T310 Power Supply N375E-01 L375E-S0 T122K T128K
$89 .00
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Refurbished: KHACHIMO Small 1U 270W Switching Power Supply FSP270-60LE FSP220-60LB ...
$139 .00
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Refurbished: KHACHIMO 2U 350W Switching Power Supply V2H-5350V
$599 .00
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Refurbished: 1Pcs for storage power MD1200 MD3200 600W 0NFCG1 H600E-S0
$119 .00
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Refurbished: KHACHIMO 4.2V60A 300W Switching Power Supply GW-RSP300WV4.2
$239 .00
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Refurbished: 1PCS For 03N5633 80P4387 RIO-2 Loop Adapter Module for DS8000
$328 .00
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Refurbished: 1pcs for Industrial computer power supply FSP300-70PFU FSP250-70PFU ...
$119 .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.