TweakTown posted a review on the Seagate Momentus 5400.3

Seagate has come to the rescue and done a fantastic job to bring the mobile hard disk towards desktop component speeds. With SATA now starting to take hold in mobile markets as the interface of choice simply because of its serial nature requiring less voltage and fewer data pins, we can expect to see 44-pin Parallel ATA drivers taking a back seat and drives such as this one going a long way to helping mobile computing performance reach the same level as desktop.

Seagate Momentus 5400.3 – Larger, Faster and Quieter