Some preliminary results on ambient water. So far, mine seems to need more volts than some here.

3.7 @ 1.4v
3.8 @ 1.4125v (shows 1.408 in cpu-z)
3.9 ? went to 1.45v with no joy so far

went back to 3.8 and got cpunb to 2800, requiring 1.35v.

More later!