Hmmm. Running at 4K ultra using sim dev tools I never see VRAM usage above 9 GBs on the 3080, even in places like Tokyo and New York. No stutter in GPU bound scenarios either (when limited by mainthread, there is obviously some stutter)
This might be due to driver overhead. What’s weird is that the 3080 shouldn’t encounter any performance loss until it uses more than 10 GBs, so there’s likely an external factor involved.
I’d still take the 3080 over the 6800 XT though, since the 3080 does outperform the 6800 XT in most benchmarks.
6900 XT is more expensive by about $300, so I can’t say I’m surprised it performs better lol
My “ranking” would be 3090 > 6900 XT > 3080 > 6800 XT (slightly better for non raytraced games at 4K) > 6800 > 3070
If MSFS gets raytracing though, which will hopefully happen (it would improve a few aspects of the sim imo), then this will all change