I'd be happy if I could just get an affordable 300+ gb superfast ssd to run all my games and apps. I notice hard drive lag far more than any speed increases from an overclock.
This spring I was deciding between a $400 SSD upgrade or a $400 Thuban upgrade (w/mobo)...putting the 160GB G2 in my 4yr old Q6600 rig made it silly snappy...so much so I backed my overclock down from 3.3GHz to 2.4GHz (yes...I am running stock now) and didn't sacrifice any perceptions of performance for my daily usages.
Encoding suffers, to be sure...but that SSD made more of a difference in the other 90% of my computer experience than a much faster CPU had made.
I will upgrade to SB or BD next year, take the next bump up in performance, but I'm loven this SSD.
