Pc Power Supply Wattage [new] May 2026

So, how much wattage do you actually need? Let’s cut through the marketing hype. If you look at the box for an NVIDIA RTX 4070, it might recommend a 650W PSU. If you look at an Intel i7-13700K, Intel might suggest a "253W peak" power draw.

Remember: A cheap, high-wattage PSU is worse than an expensive, mid-wattage PSU. Your CPU and GPU might cost $1,000—don't trust them to a $20 power brick. pc power supply wattage

When building or upgrading a PC, most people obsess over the CPU and GPU. But there’s one component that quietly dictates the stability and safety of your entire system: the Power Supply Unit (PSU) . So, how much wattage do you actually need