X48 Rampage Formula Preview.

[Alien Grey]

I tried 438 fsb / 440 fsb with unchange settings, but all failed within 20 sec of loading... did I hit a wall? I want to get 3.6GHz stable...

Try with 5-5-5-15 timings and Ai Clock Twister Moderate.

You can also try CPU and NB Clock Skew. Start with CPU Clock Skew delayed 100ps and NB Clock Skew Normal than CPU Clock Skew delayed 100ps and NB Clock Skew delayed 100ps or CPU Clock Skew delayed 200ps and NB Clock Skew delayed 100ps.