Closer to the truth....
The point was (sometimes I have a hard time explaining myself) using H20 to cool the GPU and good airflow (that means the heat needs to be directed out of the case, not just swirled around or trapped underneath) will be the best solution.
One thing I do also is I epoxy the heatsinks on (dont like tape)
http://www.arcticsilver.com/arctic_s...l_adhesive.htm