Whether a 1000W power supply is overkill depends on the specific needs of your computer system. In general, a 1000W power supply is quite powerful and is typically only necessary for high-end systems with multiple high-performance graphics cards or other power-hungry components.
If you have a relatively standard desktop PC with a single graphics card and a few other components, a 1000W power supply is likely more than you need. A power supply with a lower wattage, such as 500W or 600W, would likely be sufficient for your needs.
It’s also worth noting that having a power supply with more wattage than you need doesn’t necessarily provide any additional benefits. In fact, it could potentially waste energy and cost you more money over time.
So, before purchasing a power supply, it’s important to carefully consider the power requirements of your specific system and choose a power supply that provides enough power to meet those needs without going overboard.