31mh/s on claymore 9.8 at stock settings for the rx 64
That is on the FE edition professional cards that are already out. Workstation cards are never good for mining compared to gaming models. The Vega workstation cards use a different memory cache intended to fit large rendering files in memory. By all early accounts, you should see at least double the FE hashrate on ETH for the gaming models.
https://www.youtube.com/watch?v=iEYhtDH-AvU