What all the Amiga sites have missed is IBMs announcement of the use of SSDOI (Strained Silicon Directly On Insulator) technology. Which has just switched on 2 years ahead of schedule for the 970FX.
This could lead to a huge clock speed jump, my own opinion is IBM will have a 9xx CPU at 4GHz within 18 months. If so Intel or AMD have no hope of catching it.