*Official Retail G0 Q6600 Overclocking Thread*

[jonny_ftm]

Mh interesting. Thank you for this remark, so maybe mine would need that too.
What are the batches you have for these two quads? What vFSB do you use with your new quad?

Anyway, if it requires 1.55V to be stable at 3.4G it's not worth the overheating and the risk of burning my NB again for +100MHz, as I am stable at 3.3G 1.35V NB.

Unless you madely overclock your memory, you use +4Gb RAM or your FSB is above 450MHz, usually, you won't need to increase vNB

Those voltages on the NB are clearly not appropriate for only the CPU
Also, at those frequencies, VTT above 1.30v won't help you as you noted

Many people still bump crazy voltages every where when they don't know what to do or what's holding them.
In your case, it is clearly the vcore limiting you. These L8x steppings act like B3 and early G0 chips. For a Q6600, I won't hesitate bumping 1.53v + loadline calibration if your temperature permits it. Intel specs are 1.50v, so with 10% margin on 65nm chips you can go to 1.65v. Usually, you'll be limited to 1.53-1.55 with heat

I never heard of any Kentsfield reported deaths at those voltages and I ran my B3 at 1.53v for few months too at 3.6GHz

edit: I noted you have a commando, it is a very bad overclocker of quadcores and stability near and above 400FSB is a random dream