YES! - I'm also well aware that the Core (i5) 670 3.46GHz 32nm CPU is a fantastic Dual Core OverClocker... I've witnessed some very impressive Overclock's on an H57 Motherboard.
But remember the 4 Physical cores on the (i5 750) 2.66Ghz will in most benchmark tests I've seen, will trash the 2 Physical Core Hyper thead i5 670 3.46GHz (I will post to satisfy you if you do so wish)....
However, the i7 860 2.8Ghz - which is 4 Physical cores and 4 simulated cores will trash the lot, and is still at time of print cheaper than the i5 670 dual core 3.46GHz - and look at the difference in RAW POWER in any benchmark in Cyberspace....
I do NOT wish to get into childish scraps with anyone, I'm just posting my own opinions based on my personal experience.
So, before you reply, please respect my opinions, likewise I will respect yours too...
Thanks for reading fellow earthlings.... :)