Let me clarify for you, the 3570K is a Ivy Bridge CPU that's replacing the 2500K. Ivy Bridge CPUs aren't out until April 8th (rumor) and they will most likely be the same price point of a 2500K.
This brand new article (you might have already read it) says even a $70 dual-core Intel Pentium can beat the flagship 8150 in some games. This is very saddening to me because Intel could go monopoly on us at any given second.
http://www.tomshardware.com/reviews/gaming-fx-pentium-apu-benchmark,3120.html