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.

Yes, it's highly recommended to pair your power supply with a Battery Backup (UPS) to protect your system from power outages, surges, and voltage fluctuations. While the power supply ensures your system gets the correct power, a UPS will provide backup power during outages, giving you time to save your work and safely shut down your computer. Make sure to choose a UPS that can support your system's wattage as calculated using the Power Supply Calculator to ensure optimal protection.