I used to have an e6300, the original conroe.. At its peak performance in my hands (about 3750mhz) I could get it to compete with my e6600. They traded blows, but the only real thing the e63 beat it at was memory stuff, because the fsb was so ramped up. Ive never had a 45nm quad, but I did have a couple of q66's. I would say either the q66 or q96 would stomp that 6300 in just about everything, with just the cache alone heheh.