Very interesting findings, thanks for sharing. I was facing exactly the same dilemma between these 2 cards, ended up staying with the 3080, just because was less expensive, although I like the AMD adrenalin interface. I’m still on a 1440p monitor, hoping to upgrade to 32’’ 4K in the near future.
When rendering at 4K both the 3080 and 6900 XT seemed identical. Perhaps because it was still a 1440p monitor, I couldn’t notice any difference in distant scenery textures, thought I admit I didn’t pay close attention.
I think the 3080 will be more than enough to keep until FS is upgraded to DX12. Then there will be benchmarks to assess which one is the better GPU.
Good report! It looks like you are using the Developers FPS tool for your statistics. I recommend using a 3rd party tool, if available, preferably one that can write a log file of the collected statistics. The FPS tool is good for looking at raw numbers as they fly by but not helpful for serious comparisons which it looks like you are trying to do.
I wonder if the FPS tool “overhead” takes into account its impact on FPS. It would be helpful if ithe FPS overlay could run on a separate screen even though most of the tool output is character-based without elaborate 3D graphics.
There’s another very recent article illustrating the differences between GPU’s and already including the 6900 XT.
I can’t post links but you can google for " Il miglior PC per Microsoft Flight Simulator" and it’s on the Italian Tom’s Hardware site, from January 18th.
The site translates well to English with Google.