Ø SATA I- 1.5 Gb/sec, SATA II- 3 Gb/sec and SATA III- 6 Gb/sec
SATA
The Sata II is has a transfer speed that is two times as fast as the original Sata. The Sata has a communication speed of 1.5 Gbit/s while the Sata II is 3.0 Gbit/s.
3Gb/sec
1.5Gb/sec
Ø SATA I- 1.5 Gb/sec, SATA II- 3 Gb/sec and SATA III- 6 Gb/sec
How fast can a SATA drive transfer data?
Cable size, data transfer speed, and SATA is newer technology.
disk rotational speed in RPM
The main difference is transfer speed, if you for instance a new solid state drive it a sat 1 port it will be limited in speed, still fast but not the maximum performance you could get out of it, For a conventional Hard drive you won't notice the difference though. All sata devices are backward compatible so theres no worries there
disk rotational speed in RPM
Speed of sata 1 is 1.5 Gbps Speed of sata 2 is 3 Gbps
no, sata drives transfer all of the data through the sata cable