Here are some Evga 6800 GT benchmarks just to get you started. I have not pushed this card anywhere near its potential. It is one amazing card so far.

http://service.futuremark.com/compare?2k3=3069251 13K  3DMark 03 6800GT Air cooled

So far I have took the stock cooling and put it in the garbage where it belongs. Modded a Zalman heatpipe to fit and ran 3Dmark 03 on a year old P4 system Pretty impressive numbers and all air cooled. More to come as it is still very warm and we do not beleive in using water cooling to to many reported leaks and as we know water and computers do not mix well.