Power Supplies - Showing 697 - 720 of 11974 Products

Filter (0)
HP JD362B#ABA E X361 150W AC Power Supply
$345 .00
Free Shipping
Brocade Power Module
$361 .00
Free Shipping
HP JL085A Aruba X371 12VDC 250W 100-240VAC Power Supply - JL085-61001
$277 .00
Free Shipping
GIGABYTE GP-P550B 550 W ATX 12V v2.31 80 PLUS BRONZE Certified Non-Modular Active PFC ...
$78 .69
ASUS TUF GAMING 550W Bronze PSU, Power Supply, Axial-tech Fan Design, Dual Ball Fan ...
$84 .99
Addon ADD-QHPQDE-AOC7M Hp Jl287A To Dell 332-1364-Aoc Compatible Taa Compliant ...
$531 .69
Free Shipping
Line 6 DC-1g | 9v DC 500mA Power Supply for XDS-Plus XDR95 Relay G30 G50 G90 XD-V70/30 ...
$90 .99
Free Shipping
$90 .99
Sold by: Nature
Compaq - EVO D500/D510 Powersupply - 244163-001
$29 .49
Free Shipping
Enermax Cyberbron 500W Power Supply, 80 PLUS Bronze, Non-Modular PSU, Silent Fan, Black ...
$72 .99
Free Shipping
$72 .99
Sold by: Nature
Sparkle Power 150W Power Supply - 150 W
$115 .99
Free Shipping
$115 .99
Sold by: Nature
CableMod C-Series Pro ModFlex Sleeved Cable Kit for Corsair RM Black Label/RMi/RMX ...
$180 .99
Free Shipping
$180 .99
Sold by: Nature
MEAN WELL NDR-120-24 Single Output Industrial DIN Rail Power Supply, 24 Volts 5 Amps 120 ...
$362 .99
Free Shipping
$362 .99
Sold by: Nature
CableMod C-Series Pro ModMesh Sleeved 8-pin PCI-e Cable for Corsair RM Yellow ...
$180 .99
Free Shipping
$180 .99
Sold by: Nature
MW Mean Well EPP-200-15 15V 13.4A 200W Single Output with PFC Function Power Supply
$141 .99
Free Shipping
$141 .99
Sold by: Nature
Modular Medical Adapter 21.6W 12V 1.8A PM-20-12 Meanwell AC-DC SMPS PM-20 Series ...
$66 .99
Free Shipping
$66 .99
Sold by: Nature
Seasonic Focus GM-650, 650W, Semi-Modular, Fits All ATX Systems, Fan Control in Silent and ...
$306 .99
Free Shipping
$306 .99
Sold by: Nature
2600W Mining Power Supply Support 8 GPUs GPU Mining Rig, ETH Miner, Active PFC, PC 2000W ...
$144 .99
Free Shipping
$144 .99
Sold by: Nature
MW Mean Well LPV-100-24 24V 4.2A 100W Single Output LED Switching Power Supply
$81 .99
Free Shipping
$81 .99
Sold by: Nature
SilverStone Technology ET500-B Silverstone 80 Plus Bronze 500W ATX Switching Power ...
$108 .99
Free Shipping
$108 .99
Sold by: Nature
HP 460888-001 240 Watt Power Supply For Dc5800 Sff Dc7900 Sff
$84 .78
Free Shipping
PSU for ML110 G7 350W Power Supply 629051-001 644744-001 S10-350P1A
$372 .99
Free Shipping
$372 .99
Sold by: Nature
1800W Mining Power Supply Support 8 GPUs GPU Mining Rig, for ETH Bitcoin Ethereum Miner ...
$126 .99
Free Shipping
$126 .99
Sold by: Nature

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.