There are reviews out there - looks like the card falls just behind a 3080Ti, which is to be expected. The 3080Ti is only 5-10% faster than the 3080 10GB cards and the 3080 12GB is nipping at the heels of the 3080Ti model. To me it just looks like Nvidia wanted to push the profits on getting as much as they could out of failed dies that wouldn't fly as a 3080Ti, but were still better than the 3080 10GB.
For Nvidia, the 12GB RTX 3080 allows to significantly boost profit margins on silicon that would have otherwise sold as the original 10 GB model, enabling board...
www.techspot.com
I'm sure
@W1zzard will be posting his work soon, but don't expect to see any difference over what's already been posted by other places that have benched them. It's kind of like the 2060 12GB card - just marginally better of the 2060 6GB, but costs a lot more than it should for the paltry performance gains you might see.
If you can get a 3080 10Gb for around $1000-1100 (non scalper price) or get a 3080 12GB for $1300-1500+, I personally don't feel that maybe 5% performance gain is worth that extra $300+. Same reason I don't feel the maybe 5-10% gains a 3080Ti provides is worth nearly $800-1000 more than a 3080 10GB costs. To each their own, I guess.