Seagate announced today that it's newest lineup of hard disk drives, the 7200.12 family, are shipping with the world's highest areal density of 329 Gigabits per square inch. In a 3.5" format, that works out to 500GB per platter. That allows the 7200.12 products to squeeze 1TB of capacity onto just two discs with a sustained data rate of up to 160MB/s. The previous generation of drives used three platters in a 1TB capacity model. As with the previous 7200.11 generation drives, the latest are SATA 3.0 Gbps, spin at 7,200RPM and offer 16- and 32MB of cache. The lineup currently comes in 1TB, 750GB and 500GB models.