Power Supplies - Showing 2065 - 2088 of 17934 Products

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Refurbished: For 16V 2A Power Supply For CPT50A-16 P50A-Y011M11-N0201
$599 .00
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Refurbished: 1Pcs for OPM30M 220V to 48V/2000W Outdoor Waterproof Power Supply 5G ...
$250 .00
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Refurbished: KHACHIMO R520G7 RH2285 750W Switching Power Supply PS-2751-1F-LF
$149 .00
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Refurbished: PWS-2K05A-1R For 1U 2000W Redundant Titanium AC Power Supply ...
$499 .00
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Refurbished: KHACHIMO XPS 7100 8300 8500 R5 R6 460W Power Supply 7P3WV 02Y8X1 ...
$139 .00
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Refurbished: X306M Power Supply API4FS40-030L 24R2674 39Y7295
$129 .00
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Refurbished: 1PCS for R320 R330 R420 Server 350W Power Supply 0Y8Y65 P7GV4 9WR03
$98 .00
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Refurbished: PSL180-AD-H Switch Power Supply S5600-26C 52C S5624P 5648P
$229 .00
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Refurbished: For 300-1343 SUN U30 U60 Ultra60 Workstation Power supply, EP071295-F - G ...
$299 .00
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$299 .00
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Refurbished: 1PCS For 2100W CRPS Power Supply PSSF212202A M97240-002
$191 .00
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Refurbished: SWS100-12 For TDK Industrial Medical Equipment Power Supply 12V/8.5A
$109 .00
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Refurbished: 1Pcs for ETP4890-A2 Switching Power Supply 48V90A R4830G1
$1,045 .00
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$1,045 .00
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Refurbished: For DL360 DL380G6 G7 G8 460W Server Power Supply 511777-001 ...
$79 .00
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Refurbished: 1Pcs for T610 R710 870W Server Power Supply A870P-00 07NVX8 OYFG1C
$82 .00
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Refurbished: 1PCS for R430/R330 550W Server Power Supply DPS-550AB-8 A X185V 6V43G ...
$73 .00
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Refurbished: For DPS-1200RB A 1000W Server Power Supply 12V 100A
$125 .00
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Refurbished: 1pcs for 10 Pin Power Supply 500W E75S M410 415 M420 M425 M428 M435/510
$112 .00
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Refurbished: KHACHIMO PowerEdge T410 580W For 662HR 0662HR
$139 .00
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Refurbished: For T410 Server, Power Supply 0F5XMD Model: A580E-S0
$162 .00
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Refurbished: For PWR-150-AC switching power module 12V12.5A 150W
$250 .00
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Refurbished: KHACHIMO PMT 12V6A 75W Power Supply PMT-12V75W2BA
$49 .00
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Refurbished: 1Pcs for JPSU-850W-DC-AFI 740-053639 power supply
$388 .00
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Refurbished: 1PCS for switching power supply S8JX-P60024C 24V 27A N60024C
$425 .00
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Refurbished: Server EFRP-2462 Mini 1+1 Redundant 460W EFRP-462
$559 .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.