I'm confused, you want to do it with 'above Dew Point' cooling, or chilled water? Assuming 25degreeC room temp with 50%(+-3%) relative humidity, then Dew Point is 13.86 (+-0.9)degreeC, I believe chilled water is definitely below Dew Point.
Besides, I'm certain current record of 5.6Ghz already invokes pumping icy water or blowing chilled air to keep CPU as cool as possible. Also, you didn't make yourself clear, you simply want 6.0Ghz validation for a few seconds, or you'd like to do some light bench @ 6.0Ghz?