It's interesting to note the power consumption across all motherboards. Although they are using P67 and Z68 chipsets, energy results can fluctuate between manufacturers due to the features and specifications that are integrated. First of all, for the idle tests the system is cold booted into Windows and no additional applications are executed - the watts are noted on the external energy monitor we use and then the system is loaded with 3DMark FireStrike - watts are again monitored for the duration of the test and the highest rated wattage result is then noted down. Below are the results of this energy test.
Its worth mentioning that since the Haswell CPUs idle at 800MHz and then boost to 3.40GHz and 3.50GHz this translates to the new chips being much more energy efficient this is pleasing to see.