First of all, the Seagate Laptop SSHD drive will measure a mere 7mm in terms of thickness, and will also be able to fit into the chassis of Ultrabooks without missing a beat. As for the all-new Seagate Desktop SSHD, it will attempt to continue from where the Momentus XT 500GB and Momentus XT 750GB left off, boasting solid-state memory as well as the all-too-familiar platter-based storage, all crammed into a single chassis. Both desktop and laptop versions will feature 8GB of flash memory, although the desktop model comes in the 1TB and 2TB flavors, while notebook owners will have to settle for 500GB and 1TB capacities.