The ultramobile PC, or UMPC, is still largely a concept in search of a purpose. While the idea of a palm-size computer running Microsoft Windows and including most of the features you'd find on a full-size desktop or laptop is an engaging one, these devices are still not exactly practical. The first generation of these handheld PCs, including the Samsung Q1 and the Sony VAIO UX50, were addled by poor performance and battery life. Representing the second wave of UMPCs, the $2,500 Sony VAIO UX390 offers Windows Vista Business, a better CPU, and more RAM than its predecessor, but the biggest improvement is the move to a solid-state hard drive that offers better battery life and stability than standard hard drives.



Link: CNET