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Cisco PWR-C2-250WAC Power Module
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viridian cr2 3v lithium battery 3pack
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ARESGAME 750W Power Supply Semi Modular 80+ Bronze PSU (AGV750)
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Replacement power supply for 9V TP-Link T090060-2C1 PSU part
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CORSAIR AX Series AX1000 CP-9020152-NA 1000 W ATX12V 80 PLUS TITANIUM Certified Full ...
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Replacement power supply for 12V Tech 21 Fly Rig 5 Multi-effects
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Cisco Systems PWR-C1-715WAC-P- 715 watt AC 80 Plus Platinum Configuration1 Power ...
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Raidmax Vortex Power RX-600AC-V 80 Plus White Non-Modular ATX/12V EPS/12V 600W ...
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EVGA 700 GD 100-GD-0700-V1 700W ATX12V / EPS12V 80 PLUS GOLD Certified Non-Modular ...
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EVGA SuperNOVA 1000 G3 220-G3-1000-X1 1000W ATX12V / EPS12V SLI Ready CrossFire ...
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Corsair SF Series, SF600, 600 Watt, Fully Modular Power Supply, 80+ Gold Certified ...
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EVGA 850 B5 220-B5-0850-V1 850 W ATX12V / EPS12V 80 PLUS BRONZE Certified Full Modular ...
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EVGA 650 BQ 110-BQ-0650-V1 650 W ATX12V 80 PLUS BRONZE Certified Semi-Modular Power ...
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Replacement power supply for 9V Korg AX3000G Multi-effects
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Super Flower Leadex Platinum 1600W 80+ Platinum, 10 Years Warranty, ECO Fanless & Silent ...
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Replacement power supply for 12V Waldorf microQ Rack (blue) Synth
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Cooler Master MWE Bronze 500 80+ Bronze 500W PSU with 120mm Silencio FB Fan, Sleeved ...
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PC Power & Cooling FireStorm Gaming Series 1050 Watt 80+ Gold Fully-Modular Active PFC ...
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Dell OptiPlex 3040 5040 Desktop Power Supply 240W Model L240EPM-00 Vxkph 0VXKPH
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EVGA SuperNOVA 850 G2 220-G2-0850-XR 850 W ATX12V / EPS12V SLI Ready CrossFire ...
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SeaSonic PRIME Series SSR-1000PD 1000W Intel ATX 12 V 80 PLUS PLATINUM Certified Full ...
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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.