An I3-3220 will be almost 2 times faster than the Pentium G860 if not more and isn't a big bottleneck for a single GPU (proof as my friend run an I3-3220 with a 680 and he get only 10-15fps less than me with almost the same boost clock on the GPU in every game)
Don't ask why he get a 680 with an I3, i don't know either !!!
+1. Games now starting to take the advantage of quad-core CPUs. With Hyper-threading in i3 CPUs, it somehow acts like a 4 core CPU, even though it's really a dual-core CPU.