Power Supplies - Showing 937 - 960 of 11999 Products

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Power Supply for Dell KG1G0
$98 .75
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PFC Function Enclosed 315.9W 27V 11.7A SP-320-27 Meanwell AC-DC Single Output SP-320 ...
$173 .99
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$173 .99
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APC PNOTEPROC6 SURGEARREST Notebook 120V Surge Suppressor NOTEBOOKPRO C6 ...
$54 .99
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$54 .99
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Polycom INC. Universal Power Supply for CCX 500/600/700. 1-Pack, 48V, 0.52A, NA, and ...
$59 .99
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$59 .99
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MEAN WELL EDR-120-12 Single Output DIN Rail Power Supply 12V 10 Amp 120W
$69 .99
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MyVolts 9V Power Supply Adaptor Replacement for Grundig Satellite 800 Radio - US Plug - ...
$55 .99
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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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PC RGB Fully Modular Power Supply 850W 80+ Gold Certified with Addressable RGB Light - ...
$160 .99
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ALTRONIX CCTV Power Supply 8 Fused Outputs 24/28VAC 3.5A 115VAC BC100 Enclosure ...
$212 .99
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CableMod C-Series Pro ModFlex Sleeved Cable Kit for Corsair RM Yellow Label/AXi/HXi (Black ...
$180 .99
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Fotga Standard Cable with Female DC output for Fotga DP500 V Mount Power Supply 14.8V ...
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MW Mean Well EPP-150-24 24V 6.25A 150W Single Output with PFC Function Power Supply
$139 .99
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$139 .99
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IBM 49P2742 200W AC Power Supply
$75 .00
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HPE 408286-001 AC Power Supply
$105 .97
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APC Rack Mount PDU, Metered 100V-120V/15A, (16) Outlets, 0U Vertical Rackmount ...
$831 .99
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Enermax Marblebron 850W White Power Supply, 80 Plus Bronze, Semi-Modular PSU, Silent ...
$190 .99
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$190 .99
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Enclosed Type 100.8W 9V 11.2A NES-100-9 Meanwell AC-DC Single Output NES-100 Series ...
$95 .99
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Matrox Power Supply Unit for Monarch HD Streaming and Recording Device
$70 .99
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$70 .99
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MW Mean Well HLG-150H-24A 24V 6.3A 150W Single Output LED Switching Power Supply
$135 .99
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$135 .99
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MW Mean Well RD-125A 5V/12V 7.7A 130W Dual Output Switching Power Supply
$105 .99
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Seasonic Ss-460Sgx, 460W Atx 24-Pin Power Supply
$137 .16
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Antec Basiq BP350 350 Watt Power Supply
$159 .99
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$159 .99
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SilverStone Technology 650 Watt 80 Plus Bronze ATX PSU with Flat Black Cables ET650-B ...
$108 .99
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$108 .99
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COMPAQ 288329-001 110-240VAC INPUT, 45-66HZ - 76 Watts
$47 .53
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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.