What is the most common wattage for power supplies?

The most common wattage for power supplies typically ranges between 500 to 750 watts, which suits the needs of most mid-range gaming PCs and workstations. For high-performance systems or those with multiple GPUs, power supplies can go up to 1000 watts or more. However, for basic setups and office computers, 300 to 500 watts is often sufficient. Ultimately, the ideal wattage depends on the specific components and their power requirements.