Actually im talking about the original plan by Dirk Meyer. Bulldozer and PileDriver were to be made at 32nm SOI Game First (IBM), then SteamRoller and Excavator were to be made at 20nm SOI Gate First (IBM).
I would even buy a 28nm planar 8-Core Excavator today to replace any PileDriver.
It has way higher single Thread and MT performance at way lower power consumption. Even if you cant OC to 5GHz, i would like a 4.4GHz 28nm EX than 5GHz PileDriver.
Yeah I could see that. IBM's 22nm (not their 20nm) SOI process is quite potent and would have been capable of enabling some serious clockspeeds and performance in an excavator architecture.
A 28nm planar excavator would be best served if it were FDSOI, but 20nm would probably cost less (smaller die) and perform better (lower power) even if they just did a dummy shrink (standard caveats apply of course) effort without much re-opt effort.
Alas something tells me none of that is in the cards. The R&D dept has just been way too castrated and spread thin to support such a design project.