Power Supplies - Showing 601 - 624 of 11996 Products

Filter (0)
1800w 2000W Mining Power Supply 160V-240V ETH Bitcoin Mining Power Supply Support 8 GPU ...
$184 .37
Free Shipping
Open Box: MONTECH CENTURY II - 1050W High-End ATX Gaming Power Supply - 80 Plus Gold & ...
Save: $34.00 (31%)
$109.90
$75 .90
Save: $34.00 (31%)
$109.90
$75 .90
Open Box: MONTECH BETA 2 650W Power Supply, ATX 3.1 Ready, 80+ Bronze Certified, ...
Save: $8.00 (13%)
$59.90
$51 .90
Save: $8.00 (13%)
$59.90
$51 .90
Open Box: ASRock Steel Legend SL-750G 750W 80 PLUS GOLD & Cybenetics PLATINUM Full ...
Save: $37.00 (34%)
$109.99
$72 .99
Free Shipping
Save: $37.00 (34%)
$109.99
$72 .99
Open Box: ASRock PRO Series PRO-650G 650 W ATX 3.1 Compatible 80 PLUS GOLD Certified ...
Save: $5.00 (12%)
$42.99
$37 .99
Save: $5.00 (12%)
$42.99
$37 .99
Open Box: ASRock Phantom Gaming PG-1300G 1300W 80 PLUS GOLD & Cybenetics ...
Save: $172.00 (57%)
$299.99
$127 .99
Save: $172.00 (57%)
$299.99
$127 .99
Open Box: ASRock Phantom Gaming PG-850G 850W 80 PLUS GOLD & Cybenetics PLATINUM ...
Save: $77.00 (48%)
$159.99
$82 .99
Save: $77.00 (48%)
$159.99
$82 .99
Open Box: SAMA G850W ATX 3.1 Power Supply, 80+ Gold Efficiency, PCIE 5.1 Ready, Full ...
$64 .99
Open Box: SAMA G650W ATX 3.1 Power Supply, 80+ Gold Efficiency, PCIE 5.1 Ready, Full ...
Save: $27.00 (34%)
$79.99
$52 .99
Save: $27.00 (34%)
$79.99
$52 .99
Open Box: Rosewill VMG 1000W 80+ Gold, ATX 3.0 & 3.1 Compatible, Full Modular Low-Noise ...
$99 .99
Free Shipping
Sparkle FSP500FDB-B204 500W 80 PLUS Gold FLEX Switching Power Supply w/ Active PFC
$85 .00
Free Shipping
SUPCO URCO410 Relay Overload Capacitor
$17 .99
$17 .99
Sold by: Zoro
SilverStone Technology 450W SFX Form Factor 80 Plus Bronze Power Supply ...
$158 .99
Free Shipping
dc power supply, plastic, 10 to 12vdc, 30w
$195 .99
$195 .99
Sold by: Zoro
Sola/Hevi-Duty DC Power Supply,24VDC,2.5A,47-63Hz HAWA SDN2.5-24-100P
$266 .99
$266 .99
Sold by: Zoro
DC Power Supply,24VDC,20A,60Hz SOLA/HEVI-DUTY SDN20-24-100C
$849 .99
$849 .99
Sold by: Zoro
HP Z2 Mini G4 External Power Supply Unit (230W)
$34 .99
Free Shipping
VITEK VT-1205A-D4K Power Supply,Output 12VDC,VA Rating 48
$30 .49
$30 .49
Sold by: Zoro
Aruba 500W Power Supply
$716 .00
Free Shipping
Dell PSU-350-AC W-7200 350Watts AC Redundant Power Supply Unit
$399 .00
HP X312 1000W 100-240VAC To 54VDC Power Supply 1 KW Internal 110 V AC 220 V AC J9580A
$407 .00
Free Shipping

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.