Just in case you need 300MB/s data transfer on a single desktop hard drive interface, Samsung have a new series of SATA II drives.
The big news of Samsungs announcement is the availability of the interface and not yet another capacity increase. The new drives integrate native support for maximum I/O speeds of 3.0 Gbit per second, double the bandwidth of the first SATA generation. The Samsung drives are available in sizes of 80, 120 and 160 GByte.
Read more over at Tom's Hardware.