We are now able to find out what kind of power is being used by our test system and the associated graphics cards installed. Keep in mind; it tests the complete system (minus LCD monitor, which is plugged directly into an AC wall socket).
Ok, I am impressed. The P8P67 Deluxe simply sipped power at idle speeds even when overclocked! - Under load things did get closer to normal, but we still saw good power efficiency with this board.
As a new measure, we are now monitoring the heat generation from the key components on the motherboard; this being the Northbridge, Southbridge (if it contains one) as well as the Mosfets around the CPU. The results are recorded at idle and load during the power consumption tests.
The P8P67 Deluxe was also more heat efficient than its workstation cousin. We saw great temperatures at idle and even the load temps were better than we expected.