Is the 7800X3D Overkill for the RX 9060XT?

It seems like a significant mismatch to have one of the best CPUs with a lower-tier GPU. If you're focused on competitive gaming at 1080p, it could be a solid combo, but for 1440p gaming, the GPU will take the lead and the CPU may not be utilized fully.

It really depends on what games you're playing. If you're into esports titles where every FPS counts, the 7800X3D can help you achieve ultra-stable performance at 1080p. But for most AAA games, a weaker CPU would suffice without losing much.

Honestly, going for the 7800X3D might not be the best choice here. It could be a bit overkill for the RX 9060XT. I suggest looking at the Ryzen 9600X; it should do just fine for what you need.

In general, there isn't really such a thing as 'too good' of a CPU. The 7800X3D should serve you well for years. That said, if you're just playing casually, a more mid-range option like the 7700X should do just great for your needs.

If you managed to score the 7800X3D at a great price, I say stick with it! It'll keep you future-proof for when you eventually upgrade your GPU. But if you already have a tight budget, maybe consider a cheaper CPU to save and invest in a better GPU or other upgrades.