I can surely tell that performance is significantly better and noticable. I bumped speed @1.2G and it was rock stable, I tortured it through antutu and cpu stability test. 1.3G is semi stable cause It requires slight voltage bump which I did not play with (I still have to do this).
Bat temp is around 44C after 20 min of torturing which is very good starting from low 20-23c.
This is tested on KK cyanaosp v2.4.0 with build in kernel no special teaks or whatsoever. I will report back when I test more with voltage bump.