Came from Opty @ 2800 to E6600 @ 3800mhz and the difference in speed is HUGE!!!! Superpi from 30s down to 12, big boost in 3dmark too but I upgraded my card as well, couldnt be happier......

Real world comparison though, I cant tell the difference between the two for my daily use.... :banana::banana::banana::banana: are downloaded just as fast, surfing the web is just as fast and if Im wrong then it just proves how much I can "feel" the difference.....

If starting from scratch, Intel is the obvious choice..... but I dont think its worth the upgrade unless you just want to play with these cpus like me...