4672 SP (73 CU's) isn't happening. That is an insanely large chip for something that is a mid-range part... And that would be a die-harvested part even still, meaning it's going to be an even larger chip than the CU counts would otherwise imply. |
I wouldn't rule out 72 CUs (73 CUs seems strange). That's twice the amount of the Pro which is built on 16nm. TSMC claims their 7nm yields about a 60% power reduction and 3x transistor density improvement compared to their 16nm process. Vega 7 is not a good example as it wasn't designed for 7nm from the ground up, which Navi is.