Hi Super,
After some patience and downgrading work on CPU vcore, I found the CPU vcore value that makes my system more stable.
Setting it lower than 1.40v (sorry, I don' remember now which value was), I can run small FFTs for an hour without warnings or errors in P95, but in 3DMark06 and 3DMark Vantage, I get lower scores and also 3DMark Vantage starts to show corrupted graphics. This does not happen with a 1.40v CPU vcore. Thus, I think it is because of lowering CPU vcor than this value.
Regarding my CPU OCing, I think I'll stay by here, although if u have any further advices, they are always welcome.
Thanks once again!!!! (never is too much to thank you)!!!!
Here is a pic of P95 blend test as well as some pics of Coretemp and CPU-Z when my system is at idle:
Cheers,
nilo123