Serial ATA and NCQ are relatively new to the laptop world, and 7,200-RPM spindle speeds and high-capacity platters are still pretty cutting-edge for the 2.5" mobile form factor. The question, of course, is how well the latest Serial ATA notebook drives have integrated these new features and capabilities. It's also worth asking whether there's really a big performance gap between 5,400- and 7,200-RPM notebook drives. To find the answers, we've assembled the latest 5,400- and 7,200-RPM Serial ATA notebook drives from Hitachi and Seagate and run them through the wringer. Read on for the surprising results.