No full benchmark but this looks like it will be promising. https://twitter.com/hashcat/status/1306937641653465090
https://gist.github.com/Chick3nman/bb22b28ec4ddec0cb5f59df97...
Heres a list for 2080ti for comparison.
https://gist.github.com/binary1985/c8153c8ec44595fdabbf03157...