Computer power supplies serve a crucial function - they provide power to all the components in your PC through the motherboard or through direct hook-ups. As you can imagine, it's important then to have a high quality PSU (power supply unit) that can sustain an adequate and stable supply to your components over the long haul. That's why it's important to invest in a high quality power supply - one that can handle whatever you throw at it. A power supply will wear over time so it isn't uncommon to have to replace a unit after it has lived out its life. We carry a full line of new and replacement PSUs in all shapes and sizes. ATX power supplies are the most common size for standard desktop PCs. These can come in a variety of features from lighted to gaming to ultra quiet. Other common sizes are Micro ATX PSUs intended for mATX cases and TFX or Flex ATX power supplies designed for small form factor cases.
What does a Computer Power Supply do?
A computer's power supply unit (PSU) is the hardware that draws power from your wall outlet and converts it to a format of power that your system can use. A power supply will take the alternating current that comes from your wall outlet and turn it into usable, low-voltage, DC power for your parts including your motherboard, drives, and I/O components.
What is the most common size of power supply that most desktops use?
Most desktop PCs use ATX form factor PSUs. ATX is a format specification so if your manual calls for an ATX unit you can freely choose from our available offerings - the only thing you'll want to be concerned with is total power deliverable (to make sure it exceeds your requirements) and cable management.
What types of modular are there?
There are four different styles of modular PSUs: Modular, Non-Modular, Semi-Modular and Fully Modular.
What kind of power supply do I need?
How do I know if my power supply works?
Explanation of the different types of connectors you'll find on a power supply
There are several form factors power supplies come in including ATX, micro ATX, mini ITX, Micro PS3, LPX, SFX, WTX, CFX, and TFX. You can find a wide assortment here. You can use the following information as a guide to choose the correct power supply for your chassis. Approximate dimensions for each are stated below:
The more watts you have, the more devices your power supply can support which means you can add the latest graphics cards, the faster processors, additional hard drives, the works! Take special note to determine if your power supply is rated at true wattage or maximum wattage. A higher wattage does not necessarily mean that your power supply outputs more watts if it is rated at maximum power. True wattage is a more accurate rating of your power supply.Can my power supply ever have too many watts?
Absolutely not! The power supply only outputs as many watts as is needed to power the installed devices in your computer. For example, let's say you have a 480 Watt power supply. If the devices in your computer require 180 Watts, then that 480 Watt power supply will only output 180 Watts. The advantage of having the 480 Watt is that it can supply the 180 Watts while not being pushed to its maximum capability. This can lead to a longer lifespan for the PSU.What's the best brand?
The better brands may cost more, but there is no one brand that makes the best power supply. For many, it depends on personal preference or their own experiences. Antec, Seasonic, Thermaltake, OCZ, and Corsair are a few of the big players in the higher-end power supply market. You'll notice that the higher-end power supplies are generally heavier, due the amount and quality of products used in manufacturing the parts. That does not mean that a heavier power supply will always be a better power supply, but generally you will find weight and quality to have a direct correlation to each other. The better power supplies have an efficiency rating of 80 percent or above.