Power Supplies - Showing 2041 - 2064 of 17946 Products

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Refurbished: KHACHIMO 360 380 G7 750W Power Supply HSTNS-PL22B 591554-001 ...
$157 .00
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Refurbished: Power Supply For SKYNET SNP-G165-M 90-250VAC 18VDC 8.8A(0-17A) 160W
$439 .00
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Refurbished: 1Pcs for IPC-250 switching power supply PF signal output power supply ATX ...
$81 .00
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Refurbished: 1Pcs for T7600 T7610 T7910 Workstation Power Supply 1300W H1300EF-00 ...
$149 .00
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Refurbished: 1pcs for P2H-6500V Industrial Power Supply
$134 .00
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Refurbished: For V1 B1L G1 For iPollo HQ3300 Power Supply
$349 .00
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Refurbished: For Blade2000 B2000 Workstation Power Supply 300-1357 300-1411 670W
$412 .00
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Refurbished: KHACHIMO HDS HUS110 HUS150 HUS130 600W Switching Power Supply ...
$379 .00
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Refurbished: 1PCS For Industrial control power supply ACE-D821S 218W
$118 .00
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Refurbished: 1PCS for YM-2651V 650W 48V switching power supply module
$132 .00
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Refurbished: KHACHIMO 40W For MAP40-3000
$859 .00
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Refurbished: 1pcs for JPSU-920-AC-AFO 920W EX3400 Power Supply
$433 .00
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Refurbished: EX4330 EX4300 350W JPSU-350-AC-AFO 740-046873 DPS-350AB-22 B
$199 .00
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Refurbished: For video recorder 16-way power supply DPS-250AB-101A
$109 .00
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Refurbished: For FSP350-701UJ FSP350-601U FSP350-701UH 7MU 701US1U
$250 .00
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Refurbished: 1100W Power Supply Used On 3560X-48PF 3750X-48PF Series Switches ...
$179 .00
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Refurbished: 1PCS for DPS-150AB-10 C switching power supply
$235 .00
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Refurbished: For 3Y YH-6521B YM-6521B YM-6521BAR YH6521-XBAR Server Power Supply ...
$165 .00
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Refurbished: For EFRP-SB09 Server Power Module, TC3600 EFRP-SB09
$368 .00
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Refurbished: t3600 t3610t5810t5600t5610 power supply 425w
$139 .00
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Refurbished: 1pcs for FSP350-50FCB/57FCB industrial computer power supply small 1u ...
$209 .00
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Refurbished: KHACHIMO 1600W Power Supply PTS162M1212
$4,199 .00
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$4,199 .00
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Refurbished: For M1Z-5500V Firewall Industrial Computer 2U Server Power Module 500W
$249 .00
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Refurbished: D14-180P1A 794974-001 759051 ATX Power Supply
$139 .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.