Thats what my wife did, due to a decent deal on a second hand Nitro 7900XT. Shes on a 3840x1600 ultrawide, and the 7900XT runs noticeably better than her 3080 10GB (which was essentially a rebranded Zotac card), so its a bigger jump, especially at higher res/VRAM limited scenarios than you'd think.
It's not just the averages, the minimums were noticeably higher and it just general feels smoother.
The 3080 is a great card, but it does run out of steam strangely a bit at times, especially once you're running 1440p or higher, where the 10GB starts to become an issue.
She's always had a decent amount of RAM and a competent CPU so it wasn't that; like I say, was a noticeable difference. The 7900XT, the Nitro being as substantial as it is, also runs considerably cooler and quieter on average, its just a better OOBE, albeit the Nitro IS one of the best 7900XT variants so it might not have been such a decent jump with more of an OEM/Stock sort of job.