The move to 7200 rpm across the board for Barracudas also means that Seagate is the first company to offer a 1TB of capacity at that drive rotation speed.

The move away from 5400 rpm drives is based on the advent of a new read/write head technology that has allowed Seagate to squeeze more data onto a drive platter and still be able to read it.

In another development, Seagate said it will be converting its line of Barracuda XT 3.5-in. hard drives to a by adding NAND flash to the drives as a caching element. Seagate already sells hybrid drives under its Momentus XT line, which has up to 500GB capacity. The Barracuda XT lineup includes models that have as much as 3TB of capacity. Seagate would not specify a date for the launch of the new Barracuda XT hybrid drives, saying only that its disclosure of the new line is to demonstrate it is committed to hybrid technology.

Seagate also announced its OptiCache technology, which boosts overall performance by as much as 45% over previous generation Barracuda drives. OptiCache is based on a new dual core microprocessor and a move from DDR1 to faster DDR2 DRAM on the drive. The technology allows the hard drive to use the full 64MB of DRAM cache as a single unit. Previously, Barracuda drives split up cache into smaller chunks that were less efficient, Burks said.

The new read/write head technology signals an end to Seagate's line of "green" Barracuda drives, which . The Barracuda LP (low power) green series, is a lineup of 3.5-in. drives that Seagate marketed as consuming 50% less power than its previous 7200 rpm drives.