I'd like to start-out by saying i completely agree that people have over-hyped it and set unrealistic expectations, i know why everyone is saying 5Ghz but last time i mentioned it in this thread i got torn a new one.
Expecting the first silicon from a new fab process to have an increase of 600Mhz over an older more mature fab is wishful thinking IMO, however i think we maybe talking over each other or getting our wires crossed as the reason i posted about the 70% yields was to highlight how much more cost efficient it is for AMD than Intel, for Intel making a 32c chip is massively expensive as they may only be getting a 30% yield from one waffler due those 32 cores having to be contained within one monolithic die.
The 70% yield doesn't really tell us anything about what to expect from Zen 2 but it does show us how much more cost efficient it is for AMD, the rest of what you said i sort of agree and disagree with, 5Ghz is wishful thinking IMO but 16c consumer isn't, not that i understand why someone would want a 16c consumer version. The single thread performance will probably go up but that will mainly be down to architectural changes (things like improvements to the branch prediction, larger µOP cache, increasing the dispatcher and retire bandwidth, doubling of some data pathways to the FPU, and using IF2 that more than doubles the fabrics bandwidth). The CCX latency will still be there it will just be hidden better, not that it should matter much as we're talking about 30 odd nanoseconds.
I'm going to stop here as otherwise I'll go off on a ramble.
However i do agree that people have set their expectations way to high.
