VCore Threshold for P4 630

[StealthyFish]

I've got a Pentium 4 3.0Ghz 630 and I was wondernig what the Vcore threshold is for it. I've been looking around and I haven't found it. Do any of you know where I can find hte official threshold numbers? I"ve been looking around on Intel.com and haven't found anything. if you guys can give me link, thanks.