strange how it doesnt take the quad cores. looks like the fastest is the E6700, you might find that the E6600 is a better bet as its more common and a lot cheaper. its not much slower so the saving might be worth it. its a nice chip and should overclock up to 3.0ghz if you get a decent cooler. i had the Freezer 7 pro on mine, theyre dirt cheap and provide very good cooling. about 10c lower than the intel stock cooler and easy to install.