ASUS P5K Deluxe - Intel P35 Bearlake + E6600 B1 / Q6600 B3

[monza1412]

First, I would like to say thanks to Eva and all the gurus here for this complete thread. It has help me a lot.
But here is the reason of this post:
I was testing my beloved L629B when I come to this strange (at least for me) behavior on this motherboard.

Fsb at 413 x 9 I got 3717
Fsb at 414 x 9 I got 3312
Fsb at 415 x 9 I got 3735


tested twice, fsb set in bios. For some reason at 414, the multi switchs to 8 by itself.
I need some feedback on this, Is anyone else getting this issue? Is this some kind of strap thing or something related?
Bios is 311, I have all the options at the cpu menu at disabled, only PECI is enabled.


I had a similar thing with a P5WDH.. at 414 and 416 it booted ok, but at 415 was a no go.