A quick note.
Even 400 MHz was unstable on blend tests or OCCT in RAM mode. In small FFT it rocks.
400-405 MHz same thing (NB strap 1333). After 405 MHz, no way to boot windows. 390 MHz is the last Mhz stable on ram mode

So, I have to live with a 3.51GHz OC at only 1.38v (and from my previous tests, I should be stable even below 1.38v real on a modded mb)

It is same limit (exactly 390 MHz) as my previous Q6600 B3. Timings of 6-6-6-18 or every other voltage combination for NB/SB/ICH and DDR won't change it.

I just hit my P5B delx FSB wall with quad core chips


Sad