Seagate announced a new hard-disk and solid-state combination drive with as much as 500GB of capacity, with a 250GB model starting at $113. The new "Momentus XT"; is all about performance & capacity, and includes software that tracks a person's use trends and then uses SSD component of the drive to optimize performance, and it can adjust that performance over time with changes in user behavior. Momentus XT is a 7200-rpm Serial ATA hard disk drive combined with 4GB of SSD capacity and 32MB of DDR3 cache memory. Seagate did not provide read/write speeds on the drive. The combination, Seagate said, blows by traditional 7,200-rpm and 10,000-rpm hard disk drives for read and write speeds and nearly matches pure-SSD performance.
Seagate tested Momentus XT against three other industry-leading drives -- a pure-SSD, a 10,000-rpm Western Digital Velociraptor hard drive, and its own 7200-rpm Momentus hard-disk drive. It used ASUS G51 series gaming notebooks with Windows 7 Home Premium, running identical scripts on each. "We booted within five seconds of an SSD's boot time, and we were 15 seconds faster than a 300GB Velociraptor and 36 seconds faster than our 7200-rpm [Momentus] drive," Wojtasiak said.
More Info: Momentus XT