OK ... let me see if I understand the bar chart ...

Starting on the left, it shows lower flow rates for the 3 different CPU water block setups. As you add pumps/tops, you get a higher flow rate. Then you get even higher when you switch from the 480GTX to the PA120.3. The config you are running is the third one ... and that's the one you used to get the CPU/GPU temps you posted. Is this right so far?

I also take it from your comment about flow being overrated, that you didn't test the 1st or 2nd setup (or at least didn't post temp results). So would you expect to get the same performance level on the GPU temps with the lower flow rates? (I think this is what SNiiPE was saying, just not sure).

NOTE -- I'm not questioning your testing or your conclusions, just trying to make sure I understand. I guess I'm confused with the fact that you've shown multiple flow rate setups, yet posted only one set of temps. Maybe the flow rate data was from another test, and you included it here for info?