Power Supplies - Showing 889 - 912 of 11999 Products

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PWS-341P-1H Power Supply 340W 80 Plus Platinum
$572 .25
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LPV-60-24 Taiwan Ming Wei 60W24V Waterproof LED Power Supply 2.5A Voltage Regulator ...
$55 .99
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$55 .99
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MW Mean Well LPF-40D-30 30V 1.34A 40W Single Output LED Switching Power Supply
$79 .99
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$79 .99
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TRENDnet 120 W Single Output Industrial DIN-Rail Power Supply, Extreme -25 to 70 °C (-13 to ...
$221 .99
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Sparkle 300W Power Supply Noise Killer SPI300T8HNB-B204
$107 .99
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Seasonic FOCUS SGX-500, 500W 80+ Gold, Full-Modular, SFX-L Form Factor, Compact Size, ...
$306 .99
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Enclosed Type 52.8W 24V 2.2A RS-50-24 Meanwell AC-DC Single Output RS-50 Series MEAN ...
$57 .99
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Dell PWJ55 Vostro 230 250W 24 Pin SFF Power Supply
$45 .00
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Interchangeable Industrial Adapter 24W 15V 1.6A GE24I15-P1J Meanwell AC-DC SMPS ...
$55 .99
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Mean Well USA SD-350D-12 Power Supply; DC-DC; 12V@29.2A; 72-144V In; Enclosed; ...
$189 .99
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EPOWER EP-800PM 800W ATX/EPS12V Power Supply with 140mm Fan, Active PFC
$59 .99
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Antminer S19 XP Power Supply, GPW12AE 180-305V 3600W Aircooling PSU for Bitmain ...
$421 .99
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$421 .99
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HP 437406-001 Proprietary Power Supply
$45 .00
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InWin CS-700W 700W 80 Plus Gold SFX Power Supply with Active PFC, Modular Cables
$270 .99
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$270 .99
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TOPOWER TOP-900WB 900W Power Supply EPS12V/ATX12V v2.3 SLI Ready, CrossFire ...
$119 .99
IBM 00N7717 Power Supply 330W
$62 .66
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Industrial Open Frame 25W PD-2505 Meanwell AC-DC Dual Output PD-25 Series MEAN WELL ...
$51 .99
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240W PC Power Supply, H240EM-00 L240AM-00 B240NM-00 Desktop Chassis Modular Power ...
$80 .99
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Sparkle Power SPI220LE Flex ATX & ATX12V Power Supply
$162 .99
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TRENDnet 480W, 48V DC, 10A AC to DC DIN-Rail Power Supply with PFC Function, TI-S48048
$540 .99
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MW Mean Well HLG-150H-42A 42V 3.6A 150W Single Output LED Switching Power Supply
$127 .99
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MW Mean Well PSP-600-24 24V 25A 600W with PFC and Parallel Function Power Supply
$349 .99
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Low-Voltage Power Supply 150W Marine LED Waterproof Drive DC36-48V EMC ...
$130 .99
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Voodoo Lab Pedal Power ISO-5 Isolated Power Supply
$252 .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.