Well, that isn't going to be below 100W. Remember that today's process shrinks aren't like yesterday's in terms of power savings.
No kidding? As a "chipdesigner" you should be able to give a detailed and accurate explanation of all the factors that have changed to make it so. Go ahead, don't turn shy now.
While not buying your premise... note that the 2.8Ghz on 90nm is a 95W part. Thus a 3.8Ghz is only predicing 36% frequency scaling at the same power, which is below "yesterday's" levels. Yes, Intel could end up doing worse, but the current prediction does allow for a fair amount of "messing it up"... --Alan