RE: M4800 and Optimus?
I call . This is the weakest argument I've ever heard.
If that were the case, why enable it on the 1920x1080 screen? I appreciate the desire for an option to disable it, but that's not universally available. More of a case of I can't be bothered to properly redesign the motherboard to accommodate this high-resolution screen.
Engineers value battery life as much as the next person - why not get a Precision desktop otherwise?