SB and IB is refresh too...But If you have 32nm to 22nm, u have at high frequency working tranzistors and it help a nit in IPC (not much, but a bit yes). But still, if you shutdown turboboost, SB vs IB is only 3% IPC. So, do you think, it must be much higher at AMD refresh? No, it will be similar-only my logic. There are some new instruction sets hwich could help in some benchmarks and applications.