My motherboard died so it doesn't really matter anymore
Mine was idling about the same as yours though at somewhat of a lower voltage. I think the VID was the same.
I have no doubt that your X48 motherboard is superior to my crappy Asus P5N-D in every way. I am not missing nvidia chipsets at all. I will stay away from them like the plague from now on. Just was a shame the intel chipsets didn't support SLI.
I upgraded to Core i7 930 and have no regrets. Runs a little on the warm side but cooler than what the Q9450 was. One issue is probably the ambient temps. It's been a really hot summer here.