The tool above is up-to-date with the latest options for central processing unit (CPU), motherboard, graphics processing unit (GPU), random access memory (RAM), and more. To use the tool, you need to select your components from the drop-down lists for each category. Rather, you can use a tool like Newegg’s power supply calculatorto determine exactly how much power your new supply needs to output. You don’t need to pour through benchmarks or read reviews to know how much power output you need. While there are several important factors to consider when choosing a power supply – just like with every PC component – identifying one of the most important factors is refreshingly simple. Prices and availability of products discussed were accurate at time of publication, but are subject to change. Picking the right power supply will give you the best possible performance and help contribute to a lifetime of reliability. Therefore, you’ll want to give your power supply choice as much time and attention as your CPU, GPU, RAM, and storage options. In fact, a failing power supply can often cause other problems such as random resets and freezes that can otherwise remain mysterious. A power supply that doesn’t provide reliable or clean power can cause any number of problems, including instability that can be hard to pin down.
It’s tempting to buy just any power supply to run your PC, but that’s not a wise choice.
Instead, electricity routes from the alternating current (AC) provided by the power company into the direct current (DC) used by PC components in the required voltage. PCs run on electricity, of course, and that’s not provided directly from the wall to every component inside a PC’s case. One of the least exciting, but most important, PC components is the power supply.
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