A power supply calculator is a tool that estimates the wattage and amperage your custom PC build needs based on the components you select. Choose Newegg's PC power supply calculator to build the perfect computer for your needs. Select the components you want, such as the CPU, GPU, and motherboard, and use our PSU wattage calculator to ensure each component receives the right amount of power. · Newegg's PSU calculator simplifies the PC building process by taking the guesswork out of selecting the right components. It helps you avoid the risk of underpowering or overpowering your PC. Our compute

When choosing the correct power supply to buy, the first thing you should do is identify the components you need and plan to add. Thinking about your PC's purpose (gaming, work, etc.) can help you determine the list of components you will need for your PC build. If you need a hand with choosing the right components, the easiest way to configure your own PC is to use our custom PC builder. · Consider these key components: · Central Processing Unit (CPU): Selecting a CPU is similar to choosing the make and model of a car. For example, our PSU calculator allows you to pick a brand (Intel or AMD)

While highly accurate, it's recommended to add a 10-20% buffer to the calculated wattage for safety and future upgrades. For best results, input as much detail as possible, but the PSU calculator tool can estimate based on common setups if specifics aren't known. After calculating your needs, Newegg’s power supply calculator will suggest compatible power supplies, but the final choice depends on your preferences and requirements.