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).
The P55 FTW is not too bad at all when it comes to power consumption. This is probably due to an efficient PWM system on the board.
Again the P55 FTW does well even under load.
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 idle and load temperatures on the P55 FTW were around the norm for a P55 board. They were not the best, but were not the worst either.