Quote Originally Posted by Eldonko View Post
Was 600 stable in the first place? I highly doubt it if you used stock voltages..
Of course not, just finding max fsb but I stopped because it was too late and I left the searching for tommorow but day after I couldn't reach over 400MHz.

Quote Originally Posted by C-N View Post
Theres a fsb hole or a bit that dont run too nice (you choose) between 400 & 450fsb. It depends on what memory divider you are on as to how big the hole is 1:1 I think the hole ends about 420~425fsb, try 450fsb & see what happens.
Yes I know that and I already tried that.
400 -> boot normaly, stable
420 -> boot screen, crash
430 -> no boot
450 -> no boot
470 -> no boot
500 - > no boot
That speeds are with different voltages but no success. Divider was 1:1 but I tried other also and as you see, no success. Very weird
As I said, I have a lot of experiences with mobo's but that looks like ready for RMA.