CPUs you can use with a 850W PSU

Assuming you already have a ~250W GPU, here's a compiled list of possible CPUs you can use:

CPU TDP Quick Buy
Intel Xeon 6768P 330W
Intel Xeon 6748P 300W
Intel Xeon 6736P 205W
AMD Ryzen 9 9950X3D 170W
AMD Ryzen 7 9800X3D 120W
AMD Ryzen 7 5800X3D 105W
AMD Ryzen 5 7600X 105W
AMD Ryzen 5 7500F 65W
AMD Ryzen 5 5500 65W
AMD Ryzen 5 5600 65W

What CPUs can you use with a 850W power supply?

First of all we have to make an assumption regarding the rest of your PC, let's start by assuming you have a ~250W GPU. Also, we can assume that the rest of your PC components (MB, RAM, Fans, Storage, etc...) consume an additional 100W, and we'll have an additional 100W of margin. That leaves us with 315W for the CPU.

With 315W you can squeeze in CPUs such as Intel Xeon 6768P, Intel Xeon 6748P, Intel Xeon 6736P, AMD Ryzen 9 9950X3D, AMD Ryzen 7 9800X3D.