SATA revision 3 doubles the speed of the current 3GB/s version reaching transfer speeds of 6GB/s. The speed ratings of the different versions of Serial ATA are;
- SATA Revision 1 - 1.5GB/s - SATA Revision 2 - 3GB/s - SATA Revision 3 - 6GB/s
The different versions of SATA are backwards compatible
