If you're concerned about the future obsolescence of your miniscule Atom-based nettop, chances are its choice of optical storage is not what's bothering you. But, if that's what keeps you up at nights, Onkyo's P3 is your Ambien. Its ION platform sports the usual 1.6GHz Atom 230 proc, 2GB of memory, and 160GB hard drive. The DVD-ROM is a separate module that clips into a groove on the side and, while details are slim, that doesn't look
