I could see the used of the lower end Core i7 Quad Core to be used. I am reading that on idle usage its power consumption is lower than a Core 2 Quad, and even a bit lower than the top end Core 2 Duo(of course this is referring the to the laptop i7). Hell, it can just use once core over clocked if it believes there is no need for the other three cores to be used at that point in time.