Power Supplies - Showing 1153 - 1176 of 11999 Products

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XP POWER - ECM40UT31 - AC-DC CONV, OPEN FRAME, 3 O/P, 40W, 5V, 12V, 12V
$122 .99
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CableMod C-Series Pro ModFlex Sleeved 8-pin PCI-e Cable for Corsair RM Yellow ...
$180 .99
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TP-Link TL-FC311A-20 | Gigabit WDM SFP to RJ45 Fiber Media Converter | Fiber to Ethernet ...
$360 .99
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19.5V 12.31A 240W DA240PM190 HA240PM190 0PHF5J LA240PM190 AC Adapter For Dell ...
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Pwr 19V 65W Power Supply for Intel NUC FSP065-10AABA: UL Listed Extra Long 12Ft Cord Power ...
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Alphacool Core ATX 24-Pin PSU Jumper (13335)
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Seasonic S12III 650 SSR-650GB3 650W 80+ Bronze ATX12V & EPS12V Direct Cable Wire ...
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MEANWELL CLG-100-20 LED Switching Power Supply Driver, 100w 20v
$162 .99
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MW Mean Well RSP-100-12 12V 8.5A 102W Single Output with PFC Function Power Supply
$109 .99
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Mikrotik 24V2APOW 24V 2.5A Internal Power Supply for CCR1009-7G-1C-1S+ and ...
$50 .99
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MeanWell DR-15-15 15W 15V 1A Din-Rail Power Supply 100-240VAC-DC15V
$76 .99
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503376-001 240W Power Supply Unit for HP Elite 8000 8100 8200 SFF Pro 6000 6005 6200 ...
$54 .99
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3600W ATX PSU Power Supply Bitcoin Miners PSU PC Power Supply 12 Card Miner Mining Rig ...
$357 .99
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271352-002 HP Power Supply - 250 Watt Non Pfc
$79 .54
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CyberPower CyberShield CS50U48V DC Power Supply - Q58613
$360 .99
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Smartbuy 1000W LED Fan Silent PC ATX Power Supply PSU SATA 12V PCI-E w/Auto Fan Speed ...
$124 .99
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JPS300P-A5.0V G-Energy Best Price 5V 60A 300W Power Supply JPS300P-A5.0V
$122 .99
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TDK LAMBDA DSP30-24 AC-DC Conv, DIN Rail, 1 O/P, 31.2W, 1.3A, 24V
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Whatsminer P222B Power Supply, 96% Power Efficiency PSU for 14V Whatsminer Miner Mining ...
$630 .99
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Sparkle Power 80Plus Silver 500W ATX12V Power Supply with Active PFC SPI500A8BB
$306 .99
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ePOWER EP-650-TD1 650 W ATX12V Active PFC Power Supply
$54 .99
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GinTai Power Module Controller Battery Replacement for Dell EqualLogic PS4100 PS4110 ...
$233 .99
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Valcom Wall Rack or Wall Mount 600 mA Power Supply
$118 .99
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LED Driver 192W 12V 16A HLG-240H-12 Meanwell AC-DC SMPS HLG-240H Series MEAN WELL ...
$136 .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.