How the hell do the earlier one's overclock more, I mean their process keeps getting better and better, hence we should have more better overclocking processors.
Like gaara said, it's just like the winchesters....the reason for this is all because of supply and demand.
When theres a high demand for the venice chips they'll take really good cores, but set the multi down low, and call it a 3200+ chip when in reality it could and probably did pass for a much better chip.
Since theres no longer a high demand they take the chips that just barely pass for the 3200+'s and mark it as such and if it reaches a 3500+ they mark it as such.
Same thing for the ATI cards with unlockable pipelines...when it was in high demand they simply locked good pipelines, but when it wasn't in demand they took the ones with the bunk pipelines, closed those and put the card out.