Good pc for world of warcraft

I use 2560 x 1440 and 165 hz for my screen

Would like to play flawless on setting 10

Forget that.
There is no current system that can handle stable high refreshrates on settings 10.
You will possess massive drops at the superbloom, world events, raids, Valdrakken hub.

The problem is the WoW engine at it’s core, it’s basically singlethreaded for the most part.
Even the 7800X3D, the fastest CPU for gaming and WoW atm won’t give you what you want

I’m on a 5800X3D and just recently got a 4090.
I am not playing at max settings, especially draw distance and environmental detail, also compute effects and RT shadows are killing the CPU and bottlenecking the GPU hard.

If i max everything out i drop to like 100 FPS while in the new Zone just questing (1440P, 144Hz gsync).

This screenshot is with draw distance and lod at 8. Compute at high and water good.
RT shadows on high (add ~10 FPS if disabled).
Lowest FPS was 33 at a point during the Superbloom.
Unyielding CPU-Limit.

So my recommendation is to get the 7800X3D, 32GB 6000Mhz DDR5, Gen 4 nvme, and for the GPU whatever you can afford, like a 4070 e.g. (too many problems with AMD, would not recommend fo