ya i've always just assumed its another name for centrinos... i would assume it would be very close....
for p4.. i would say it would be close to 2.6 - 2.8 ghz
for turion, i would say it would be equivalent to... 1.8ghz..
those are just guesses...
"Is virtue a thing remote? I wish to be virtuous, and lo! Virtue is at hand." -Confucius