Had an older probook, but its going to my son as a tough laptop for school. Based on reviews for the CPU alone, I wasn't expecting much in terms of performance difference, but while it may not leaps ahead in terms of raw horsepower, I am very impressed in its efficiency. The processor barely turbos most of the time, which means the laptop runs quiet and cool for longer. From a usability standpoint, its not a major overhaul but it does feel alot sleeker and more comfortable to use. The trackpad is very smooth, and the keyboard is very responsive. The display is nice, and although the weight hasn't changed much it does FEEL easier to carry with...view more