gonna be used for gaming and burning dvd's/cd's and going online.
OP. Buy the monitor you like, then buy the core2 cpu you can afford with the remaining money.
This thread got way too technical. You'll be able to oc whatever you buy easily, and you probably really won't care as much as people would lead you to believe.
So to answer your question...
Get the monitor.
Buy a E6300 or E4300.
Don't buy a E6600.