Power Supplies - Showing 1177 - 1200 of 11999 Products

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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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Desktop Industrial Adapter 160W 48V 3.34A GST160A48-R7B Meanwell AC-DC SMPS ...
$136 .99
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MEAN WELL RSP 1500W 63A Switching Power Supply RSP-1500-24 AC/DC Single Output Slim ...
$990 .99
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Seasonic FOCUS GX-550, 550W, Full-Modular, Fan Control in Fanless, Silent, and Cooling ...
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delta adp-60dh 100-240v 1.5a 50-60hz output: 19v 3.16a
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MEAN WELL RSP 1500W Switching Power Supply AC/DC Single Output RSP-1500-48 32A Slim ...
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CableMod C-Series Pro ModMesh Sleeved Cable Kit for Corsair RM Yellow Label/AXi/HXi ...
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MW Mean Well PSP-600-12 12V 50A 600W with PFC and Parallel Function Power Supply
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Whatsminer P21E Miner Power Supply PSU for M32 M10s, M20s, M21s M30s BTC Mining
$630 .99
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Enclosed Type 50.4W 12V 4.2A NES-50-12 Meanwell AC-DC Single Output NES-50 Series MEAN ...
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LINEAR PIP24VDCRU PIP: Switch Mode Plug-in-Power Supply 24
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HP 381024-001 Proprietary Power Supply
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CableMod RT-Series Pro ModFlex Sleeved 8-pin PCI-e Cable for ASUS and Seasonic (Black + ...
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Lenovo 24R2572 Lenovo 310 Watt Power Supply For Thinkcentre-24R2572
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Altronix Power Supply 12VDC Or 24VDC 6A (AL600ULXB)
$280 .99
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Streacom ST-NANO160 Nano PSU 160watt, AC-DC Adapter, Internal PSU
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SPARKLE POWER 700W SPI700U4BB-B204 1U POWER / SPI700U4BB-B204 /
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AZZA 850G14 / 850W / ATX 80 PLUS / GOLD Certified / Full Modular Power Supply
$129 .99
Garmin 0101252700 GXM 53 Power and Audio Module, Black, Small
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250W Power Supply for Dell 7GC81 Optiplex
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Gai-Tronics 12VDC Power Supply for Desksets
$119 .99
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MW Mean Well PSP-600-48 48V 12.5A 600W with PFC and Parallel Function Power Supply
$318 .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.