qft!
the single core athlon series 3000 3200 3500 3700 and 4000 went by p-rating and were equavalent to 3.0, 3.2. 3.5 3.7 and 4.0 pentiums
but once the dual cores came in the whole naming scheme got ruined
because 3800x2's did not have 3800 p-ratings
What you said ^^ is very true