$$250W (\textCPU) + 285W (\textGPU) + 75W (\textSystem) = 610W \text Total Draw$$
Use estimators for a ballpark . Then:
The most accurate and trusted tool in the PC building community is the .
An underpowered PSU can cause random shutdowns, blue screens, or permanent hardware damage during high-load tasks like gaming or video editing.
PSUs are most efficient at roughly 50% load . Operating at 100% capacity constantly generates excessive heat and can shorten the lifespan of the unit.