If you go by the higher TDP, it's 22w additional for each cpu, which would mean 88w total. The question is would the extra 4% in speed be worth the extra 16% power draw.
I am not sure I follow. From the specs sheet I am looking at, they both have 115W TDP. The 6176SE goes up to 140W TDP. I am missing something?
http://www.cpu-world.com/CPUs/K10/AMD-Opteron 6176 - OS6176WKTCEGO (OS6176WKTCEGOWOF).html