I pretty much already match all of those settings, denny except that I have memory set to extreme (instead of turbo or standard).
Also, as far as I can tell, and through the hours of P95 testing, my 4.01ghz OC requires a 1.3vcore... at 1.2875 I was getting FATAL ERRORs. I have the QPI at 1.25.
Yeah, voltages are pretty much a luck of the draw type thing--I was lucky
I do like "standard" over other choices--seems to give me stability easier. I just wanted to throw that out there ( the guide) coz a Cmos reset followed by Op Def. can do wonders when gremlins are playing games. I wish you much success