Power Supplies - Showing 1345 - 1368 of 12002 Products

Filter (0)
Seasonic FOCUS GX-750, 750W 80+ Gold, Full-Modular, Fan Control in Fanless, Silent, and ...
$306 .99
Free Shipping
$306 .99
Sold by: Nature
DC/DC Power Supply Single Output 30 Volt 20A 10-Pin
$86 .99
Free Shipping
$86 .99
Sold by: Nature
MEAN WELL RSP 1500W Switching Power Supply AC/DC Single Output RSP-1500-5 240A Slim ...
$990 .99
Free Shipping
$990 .99
Sold by: Nature
Enclosed Type 68W RD-65B Meanwell AC-DC Dual Output RD-65 Series MEAN WELL Switching ...
$68 .99
Free Shipping
$68 .99
Sold by: Nature
PSU for 3667 3668180W Power Supply F180ES-00 L180EPS-01 B180AS-00 H180ES-02 ...
$107 .99
Free Shipping
$107 .99
Sold by: Nature
BitFenix Formula 80 Plus Gold Standard ATX PSU 750W BF-750G, BP-FM750ULAG-7R
$126 .99
Free Shipping
$126 .99
Sold by: Nature
Dell OptiPlex 780 790 9010 7010 USFF 180 Watt Power Supply L180EU-00 F180EU-00 ...
$48 .93
Free Shipping
19.5V 12.31A 240W DA240PM190 HA240PM190 0PHF5J LA240PM190 AC Adapter For Dell ...
$214 .99
Free Shipping
Alphacool Core ATX 24-Pin PSU Jumper (13335)
$4 .99
HP 350030-001 Power Supply - 240 Watt With Pfc For Dc5100 Sff And Dc7
$45 .40
Free Shipping
Tycon Systems PS48V-2.5 120W Power Supply with 4 Pin Mini Din Connector - 48V44; 2.5A
$101 .99
Free Shipping
$101 .99
Sold by: Nature
ePOWER EP-650-TD1 650 W ATX12V Active PFC Power Supply
$54 .99
Free Shipping
TDK LAMBDA DSP10-5 AC-DC Conv, DIN Rail, 1 O/P, 7.5W, 1.5A, 5V
$64 .99
Free Shipping
$64 .99
Sold by: Nature
PWS-2K21A-BR Power Supply 2U 2200W 80 Plus Titanium L
$1,758 .00
Free Shipping
CableMod C-Series Pro ModMesh Sleeved 8-pin PCI-e Cable for Corsair RM Black ...
$180 .99
Free Shipping
$180 .99
Sold by: Nature
HP 352395-001 200 Watt Ultra Slim Power Supply For Dc7100
$41 .13
Free Shipping
CableMod RT-Series Pro ModFlex Sleeved 8-pin PCI-e Cable for ASUS and Seasonic (Black, ...
$180 .99
Free Shipping
$180 .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
CableMod C-Series Pro ModMesh Sleeved Cable Kit for Corsair RM Yellow Label/AXi/HXi ...
$180 .99
Free Shipping
$180 .99
Sold by: Nature
Enclosed Type 504W 48V 10.5A RSP-500-48 Meanwell AC-DC SMPS RSP-500 Series MEAN ...
$227 .99
Free Shipping
$227 .99
Sold by: Nature
AZZA 650W / ATX 80 PLUS / Bronze certified / Non-Modular Power Supply
$59 .99
Free Shipping
Enclosed Type 33W NET-35B Meanwell AC-DC Triple Output NET-35 Series MEAN WELL ...
$61 .99
Free Shipping
$61 .99
Sold by: Nature
400G4 282G3 310W Power Supply D19-310P2A L63964-002 PCG007
$157 .99
Free Shipping
$157 .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.