Intel Core 2 Chipset Power Consumption Shootout

[IronBits]

http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2855


Intel Core 2 Duo E6700 (2.66GHz/4MB)
Motherboard:
ASUS P5W DH Deluxe (975X)
ASUS P5B Deluxe (P965)
ASUS P5NSLI (nForce 570 SLI)
Power Consumption
General Apps 3D Rendering Encoding Gaming
NVIDIA nForce 570 SLI 137W 148.6W 149.9W 166.3W
Intel P965 127.3W 142.1W 142.9W 157.0W
Intel 975X 131.1W 144.7W 146.6W 160.7W

[Digital Parasite]

Now I wonder if that has to do with the 965 chipset specifically or other features/components on the motherboards?