Power Supplies - Showing 1297 - 1320 of 11996 Products

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CableMod C-Series Pro ModMesh Sleeved Cable Kit for Corsair RM Black Label/RMi/RMX ...
$180 .99
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DellOptiplex GX1, GXa, GX110 200 Watt Power Supply - Genuine NPS-200
$137 .16
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Industrial Open Frame 141.6W 24V 5.9A EPP-200-24 Meanwell AC-DC EPP-200 MEAN WELL ...
$119 .99
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PWS-1K27A-1R Power Supply 1000W/1200W
$1,110 .00
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MW Mean Well LRS-100-5 5V 18A 90W Single Output Switching Power Supply
$77 .99
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MAINGEAR Ignition Fully Modular Gaming Power Supply, 80-Plus Platinum Rated PSU (1200 ...
$360 .99
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CableMod C-Series Pro ModMesh Sleeved Cable Kit for Corsair RM Black Label/RMi/RMX ...
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PWS-2K21A-BR Power Supply 2U 2200W 80 Plus Titanium L
$1,758 .00
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HP 365W Redundant Power Supply Power Supply
$125 .25
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400G4 282G3 310W Power Supply D19-310P2A L63964-002 PCG007
$157 .99
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HP Z200 Workstation 320W Delta Power Supply
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Power Supply 8 Fuse 24Vac @ 12.5A
$305 .99
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[PowerNex] Mean Well HRPG-300-12 12V 27A 324W Single Output with PFC Function Power ...
$200 .99
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Power-One HTAA-16W-AG Power Supply; AC-DC; 5V@2A, 12V@0.4A, -5V@0.4A; 100-264V ...
$206 .99
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HP 410719-001 250 Watt 115230Vac Input 5060Hz Power Supply For Dx2200
$36 .86
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CableMod C-Series Pro ModMesh Sleeved 8-pin PCI-e Cable for Corsair RM Black ...
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Walrus Audio Aetos 8 Output Power Supply, White/Blue Limited Edition Hanukkah Aetos
$304 .99
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Sparkle Power 300-Watt 12V ATX Power Supply with Active Power Factor Correction ...
$502 .99
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Desktop Industrial Adapter 180W 12V 15A GST220A12-R7B Meanwell AC-DC SMPS GST220A ...
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Industrial Open Frame 45.6W 24V 1.9A PS-45-24 Meanwell AC-DC Single Output PS-45 MEAN ...
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BOGEN - AVAD PRS48 48V DC Power Supply
$180 .99
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Altronix Proprietary Power Supply AL1002ULADA
$613 .99
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Aerocool Cylon 700W 80Plus White Certified Fully Wired Non-Modular Power Supply Unit
$176 .99
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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.