Wierd E6600 problem

[rounddodger]

Having a few problems with my setup today.. Had it orthos stable at 3.3Ghz with RAM @ 1:1 (4-4-4-12 mem timing default by SPD) and 367 FSB x 9, 1.5 vcore.

Now I tried to get upto 3.4 and had stability problems so had to come down but couldn't get it stable again @ 3.3!! Really really annoying. Anyway, just been playing with the multiplier and tried 400 x 8 and reduced timings to 5-5-5-15 and it booted (to my suprise- never gone over 377 fsb) but 400x9 = 3.2ghz, XP was displaying 3.6Ghz!! CPU-Z was showing 3.6 with 450x9 fsb! Hmmm. Checked it again but BIOS is still 400x8. Any ideas whats going on here?

Thanks

 

[PARUK]

Did you try flushing the cmos? I saw some weird behavior (e.g. fan control misbehaving) after backing off from higher o/c attempts. A cmos flush got rid of them every time.