There shouldn't be any big difference that I can think of. The main one is HyperThreading, but Dolphin only uses 2 cores so it's not like having 8 threads vs 4 would help any. SSE should be the same as well.Stallion Free said:I have heard a lot of people say it's worth ponying up the extra couple bucks to go with a similarly clocked i7 instead of i5, but I don't know for sure, maybe someone else can answer that.