Power Supplies - Showing 1945 - 1968 of 17942 Products

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Refurbished: FSP200-601U 200W 1U Server Industrial Control Power Supply
$199 .00
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Refurbished: 1PCS for SS-460H1U Active PFC 460W Server IPC Power Supply
$295 .00
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Refurbished: 1pcs for FSP350-50BR 350W FSP350-50BR Equipment Power Supply
$191 .00
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Refurbished: KHACHIMO DC 440W Power Supply C3KX-PWR-440WDC AA25970 ...
$659 .00
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Refurbished: R515 R525 Server Module DPS-770AB A 360015
$179 .00
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Refurbished: 1PCS for T5400 T5500 Power Supply H875EF-00 N875EF-00 875W 0J556T ...
$118 .00
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Refurbished: For PWS-711-1R 710W Server Redundant RTN -48V Power Supply ...
$250 .00
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Refurbished: Server Power Supply EVA6400 EVA8400 339596-601 489883-001 ...
$179 .00
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Refurbished: KHACHIMO Power Supply For Power-One 375W Power Supply PFC375-4000F
$2,199 .00
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$2,199 .00
Sold by: Magicpower
Refurbished: For TDI Communication Inverter Power Module LCE15-48-220/H
$359 .00
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Refurbished: PWS-665-PQ 665W Tower Workstation Power Server
$169 .00
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Refurbished: 1Pcs for R0X35A ARUBA 6400 1800W switching power supply 0957-2509 ...
$298 .00
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Refurbished: 1PCS For PWR-500-DC-F PWR-00190-03 DS500SDC-3 Power Supply
$323 .00
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Refurbished: 1PCS for FSP300-20GSV DPS-300AB-81A POE Power Supply
$132 .00
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Refurbished: KHACHIMO 54V4.6A 12V2A 275W Power Supply N275-36D54
$219 .00
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Refurbished: Power Supply Grau Elektronik 60 SBB 110 D 15 E 00 Power Supply 6FH9483-3B
$999 .00
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Refurbished: 1Pcs for 241115.615DT DC Boost Power Supply Module FP2 DC/DC 42-75V ...
$559 .00
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$559 .00
Sold by: Nytke team
Refurbished: For T7600 T7610 1300W power supply 6MKJ9 H3HY3 H1300EF-00
$162 .00
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Refurbished: 1pcs for M48300N1 DC-DC communication power module 48V/10A to 12V/24V
$191 .00
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$191 .00
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Refurbished: For M6300 M6400 M6475 A6800 power supply HK280-23FP PCB037 power ...
$118 .00
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Refurbished: server power supply Delta DPS-400AB-9A capacitor temperature control fan
$99 .00
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Refurbished: For RH2288H RH2285 V2 Server Power Supply PS-2461-7H 460W PN: ...
$73 .00
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Refurbished: ZWS15-15/J For Lambda Industrial Medical Equipment Power Supply 15V/1.2A
$89 .00
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Refurbished: For Z440 525W 700w workstation power supply DPS-525AB-3A DPS-700AB-1 A
$175 .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.