I have no preference for AMD or Intel but I know SC2 has run better on Intel systems in the past. What do you think? Probably no overclocking. Thanks.
Anything ivy/sandy bridge will get a good 120 fps anyway on SC2. Even a G3258 but well not overclocked.
SC2 only uses two cores, so the Pentium G3528 on up will be your best bet. I'd personally recommend a 4690K, but you really can't go wrong. The game plays badly on AMD processors.
That's just single player too. In MP 4v4, where it really counts, the 8320/8350 will struggle to attain even 30fps at times.