Power supply for the Radeon RX 6600

How much power the Radeon RX 6600 needs

The Radeon RX 6600 is rated at 132 W. With Ryzen 5 5600 the whole PC comes to about 310 W under load, so a 450 W power supply gives about 40 percent headroom and a 450 W unit is the least we would use. Across the four processors in the table the recommended size runs from 450 W to 650 W, which shows how much the processor matters.

For comparison with the neighbouring cards in our list, the GeForce GTX 1080 (180 W) needs 550 W and the GeForce RTX 2070 (175 W) needs 550 W with the same processor.

Processor by processor

For the Radeon RX 6600, with the Ryzen 5 5600 the load is about 310 W and a 450 W supply fits; with the Ryzen 5 7600 the load is about 310 W and a 450 W supply fits; with the Core i5-14600K the load is about 445 W and a 650 W supply fits; with the Ryzen 7 7800X3D the load is about 376 W and a 550 W supply fits. The gap between the lightest and the heaviest build is 200 W of recommended supply, which is about the rating of a mid-range graphics card on its own.