Very interesting attempt to cross-reference CPU performance/benchmarks across 7 decades. I'm not sure I agree with every step but I'm sure I couldn't do better! Good that he includes lots of data from 70's/80's BYTEs. He seems to miss most of the minicomputer market of the era, though. It's harder to do that inclusion because there was easily a factor of 3 in price between selling prices and list prices, and even the list prices usually weren't published in things as available as BYTE. Finding ads and reviews from, say, Digital Review would be a start. I think a couple of his price points from BYTE were probably vaporware at publishing time, although within a year or so they were relevant. Tim.