Who doesn't overclock these days tho? The E5200 is as easy to overclock as the E8500
I don't overclock very high for customers first of all. Second of all, a processor at 3.0 Ghz+ does not necessarily need overclocking to perform well with a single GPU. Also if you factor in the extra cost of an aftermarket cooler required to overclock past 3.0 Ghz then the E5200 will be more expensive than the 7850 by a good bit, so they can't be compared.
Also the E5200 is not as easy to overclock as the E8500. The E5200 is much more sensitive about FSB, and therefor is a bit more difficult to overclock than the E8500.
Looks like the 7850 will be my new budget CPU for future builds.