As I type this round-up of top laptops on my own Windows portable desktop replacement, I can't help thinking that maybe it's time for an upgrade. It seems like only yesterday that dual-core processors, 500 GB hard drives, a couple of hours of portable use and screen resolutions of 1366 x 768 were at the very tip of every salesperson's tongue. But these days such machines would probably have a hard time attracting flies. 2013 has been a year of high performance, low power processors, long battery life, and stunning displays. Read on for a selection of top performers that have caused Gizmag's heart to skip a beat or two.