While you guys are talking about the min. voltage, I have a question that I am sure has been asked 1000 times before. I just can't find it using the search function:

What is the max vcore (as seen in windows) that you would run this cpu at 24/7 under water.

My q6600 does 3.8ghz at 1.55V under load and doesn't pass 65C. I plan on improving my water cooling setup soon.