Hi, I am hoping someone has an answer for this question. What is the factor that limits the D946GZIS to E6700 CPU? I know there are higher rated CPUs with a 1066 FSB. And the multiplier can go higher with lower rated CPUs. As I am not in the market as of yet to upgrade ($ is always the issue) I would like to find the best possible CPU for this motherboard. Is there a fudge factor? Thank you for your time.