School me on quad core processors v build me a rig

well… when they were up to 3.8ghz i think was the highest i have seen… then most processors now sit anywhere from 2.0ghz to 2.6ghz… I would say thats a drop. I think this is what marcus was getting at… but again its a terrible way to grade a processor when the L2 and L1 caches have increased immensely in size… and obviously the introduction of mulitple processing cores to increase performance.