i have a friend like that, he will brag it up in any conversation about anything. be it computer, cars or women, but is hard pressed for details when asked.
i've gotten my memory to 1100 mhz on 2.1 volts (that is the gskills in my sig rig, the other memory is junk.)
i upped the voltage to 2.2 and tryied for 1200, but it was a no go, i wouldn't even post.
as for his cpu-validation, i looked at the cvf file it creates, its a string of numbers. i am not sure how he could have faked it, but this isn't the cia database we are talking about after all, i'm sure with time and determination, some one will find a way.
if you look at his posts, he has been attempting to scam people with fake 3dmark06 keys for real items etc, and he has good rep so he looks trustworthy but has been found out a few times
this guy should really be banned by admins