Power Supplies - Showing 1033 - 1056 of 18357 Products

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CableMod C-Series Pro ModMesh Sleeved Cable Kit for Corsair RM Yellow Label/AXi/HXi ...
$180 .99
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delta adp-60dh 100-240v 1.5a 50-60hz output: 19v 3.16a
$51 .80
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DC 12V 5A Switching Power Supply. Good for Water Pump or LED Light
$53 .99
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Sparkle Power SPI220LE Flex ATX & ATX12V Power Supply
$162 .99
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Lambda Power Supply Hws15-15/A 100-240 Vac .5 A (6098)
$140 .89
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CableMod C-Series Pro ModFlex Sleeved 8-pin PCI-e Cable for Corsair RM Yellow ...
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Altronix AL300ULX Power Supply Charger, Single Class 2 Output, 12/24VDC @ 2.5A, 115VAC
$318 .99
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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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CableMod RT-Series Pro ModMesh Sleeved Cable Kit for ASUS and Seasonic (Black/Red)
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Streacom ST-NANO160 Nano PSU 160watt, AC-DC Adapter, Internal PSU
$284 .99
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Antminer S19 XP Power Supply, GPW12AE 180-305V 3600W Aircooling PSU for Bitmain ...
$421 .99
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TOPOWER TOP-900WB 900W Power Supply EPS12V/ATX12V v2.3 SLI Ready, CrossFire ...
$119 .99
HP 613763-001
$51 .80
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Lenovo 24R2572 Lenovo 310 Watt Power Supply For Thinkcentre-24R2572
$79 .54
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Enclosed Type 50.4W 12V 4.2A NES-50-12 Meanwell AC-DC Single Output NES-50 Series MEAN ...
$64 .99
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DC Power Supply, 24VDC, 3.1A, 50/60Hz
$177 .99
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LED Driver 60W 12V 5A HLG-80H-12A Meanwell AC-DC SMPS HLG-80H Series MEAN WELL ...
$114 .99
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Dell R224M 235-Watt Power Supply
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Seasonic S12III 650 SSR-650GB3 650W 80+ Bronze ATX12V & EPS12V Direct Cable Wire ...
$126 .99
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TP-Link TL-FC311A-20 | Gigabit WDM SFP to RJ45 Fiber Media Converter | Fiber to Ethernet ...
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3600W ATX PSU Power Supply Bitcoin Miners PSU PC Power Supply 12 Card Miner Mining Rig ...
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Smartbuy 1000W LED Fan Silent PC ATX Power Supply PSU SATA 12V PCI-E w/Auto Fan Speed ...
$131 .99
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19.5V 12.31A 240W DA240PM190 HA240PM190 0PHF5J LA240PM190 AC Adapter For Dell ...
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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.