Raja saying that the RX part will run faster for games can mean a number of things. Less HBM2 (8GB) at faster frequency offering higher b/w? Higher boost clocks? High overclock headroom? At least the part about Volta(ge) means to me that they won't be limiting the GPUs as much as Nvidia does, doesn't say much about how these will overclock but it's a good sign for the people that want to put in the effort.