Power Supplies - Showing 1297 - 1320 of 11999 Products

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Power Supply for Optiplex GX Series Models With M
$42 .20
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CableMod C-Series Pro ModMesh Sleeved 8-pin PCI-e Cable for Corsair RM Yellow ...
$180 .99
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Dell M178R Optiplex 780 180W 8-Pin USFF Desktop Power Supply
$59 .00
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Industrial Open Frame 300W 24V 12.5A EPP-300-24 Meanwell AC-DC EPP-300 MEAN WELL ...
$145 .99
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39Y7189-06 Ibm 670Watt Redundant Power Supply For Xseries X3550 P/N:
$91 .99
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Aerohive Networks 36W Power Supply for AP550 Model AHDL-ACC-PWR-36W-US
$123 .99
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Power Supply 8 Fuse 24Vac @ 12.5A
$305 .99
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MAINGEAR Ignition Fully Modular Gaming Power Supply, 80-Plus Platinum Rated PSU (1200 ...
$360 .99
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PSU for ProDesk 600G3 800G3 SFF Power Supply 901765-001 PA-1181-3HV DPS-180AB-26 A ...
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Mean Well RSP Switching Power Supply RSP-1000-27 1000W 37A
$614 .99
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MEAN WELL RSP 1500W Switching Power Supply AC/DC Single Output RSP-1500-12 125A Slim ...
$990 .99
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HP Z200 Workstation 320W Delta Power Supply
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HP 305447-001 325W AC Power Supply
$94 .91
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Power-One HTAA-16W-AG Power Supply; AC-DC; 5V@2A, 12V@0.4A, -5V@0.4A; 100-264V ...
$206 .99
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Enclosed Type 150W 15V 10A RS-150-15 Meanwell AC-DC Single Output RS-150 Series MEAN ...
$84 .99
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MW Mean Well DR-4524 24V 2A 45W Single Output Industrial DIN Rail Power Supply
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MEAN WELL SCP-35-12 13.8V 2.6A 35.9W Single Output Switching Power Supply Security ...
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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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IBM XSeries 346 625W Hot Plug Server Power Supply 74P4411 74P4410 Astec AA23260
$120 .99
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XPG Pylon 550W 80 Plus Bronze Certified 120mm Fluid Dynamic Bearing Fan Power Supply ...
$149 .99
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AC to DC Power Supply Single Output 12 Volt 13 Amp 156 Watt
$124 .99
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[PowerNex] Mean Well HRP-600-3.3 3.3V 120A 396W Single Output with PFC Function Power ...
$330 .99
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1000W Power Supplies , EAGWELL 24V 41.7A DC Universal Regulated Switching Power Supply ...
$162 .99
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MW Mean Well LRS-100-5 5V 18A 90W Single Output Switching Power Supply
$77 .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.