PSU Power Calculator
PC & GamingPC BuilderCalculate peak wattage requirements and recommended power supply capacity for your PC build.
698 Watts
950W Gold
Includes 30% safety overhead for power spikes and future upgrades.
How to Use PSU Power Calculator
Follow these simple steps to use this free browser-based tool:
Select Components
Pick your CPU and graphics card models to load accurate manufacturer TDPs.
Configure Storage & RAM
Select your number of RAM sticks, NVMe SSDs, and SATA hard drives.
Review Recommended PSU
Get calculated peak load wattage and recommended PSU wattage rating.
Key Features & Benefits
Frequently Asked Questions
Why is the recommended PSU wattage higher than estimated load?
Power supplies operate most efficiently between 50% and 80% load. Adding a 20-30% headroom prevents thermal throttling and handles GPU transient spikes.
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