Spend 5 minutes with a good calculator before you buy. Your PSU – and your data – will thank you.
Calculating your computer's wattage is crucial for several reasons: wattage calculator computer
Take the calculator’s “minimum” number and multiply by 1.2 to 1.5. Example: Calculator says 500W → Buy 600-750W. Why? PSUs run quieter, cooler, and longer at 50-60% load than at 90% load. Spend 5 minutes with a good calculator before you buy
PSUs are most efficient at roughly 50% load . An appropriately sized unit saves on electricity and runs cooler. Example: Calculator says 500W → Buy 600-750W
If a calculator doesn’t ask for your specific GPU model (e.g., “ASUS TUF 4070 Ti OC” vs. “RTX 4070 Ti reference”), it’s likely guessing. Go to one that maintains a live database (OuterVision, PCPartPicker, or manufacturer tools).
Underpowered systems often suffer from random shutdowns, blue screens, or hardware damage.