Celeron E1200 FSB wall - how to overcome?

[murak]

My E1200 seems to have a fsb wall @396mhz, anyone have a tip on how to get over 400mhz?

How much PLL and NB volt is ok?

[byleung]

it is very depend on MB and your PSU. Also, the heatsink fan you are using.
Actually 396 MHz FSB is pretty good already

[murak]

thanks, byleung!

I have tested 400mhz fsb with 6x multi and it is stable. However when I set multi to 8x the highest I can currently get is 396mhz fsb. Mind you this is with 1.6vcore, single stick of ram and all other bios values tuned to my best effort (no sound, speedstep etc). @396mhz fsb superpi 1mb is ok, but @397 and above the system has a hard time even booting (never got as far as to windows).

Either I´m missing some crusial value in bios or I hit my cpus MAX. What do you think?