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The Deskstar 7K1000.D is Hitachi's first one-disk, 1TB, 7200 RPM 3.5-inch hard drive for use in power-friendly consumer and commercial desktop computers. This fourth-generation 1TB hard drive from Hitachi uses Advanced Format, which increases the sector size on HDDs from 512 bytes to 4096 (4K) bytes, thereby increasing capacities and improving error correcting capabilities. Consult the Hitachi Advanced Format Technology Brief for more information on these drives. Leveraging eighth-generation power management technology, as well as power-saving HiVERT innovations pioneered on the popular 2.5-inch line of notebook hard drives from Hitachi, this new desktop drive provides up to 16% idle power savings over the previous model, delivering best-in-class power management and thermal emissions.