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
Cable size, data transfer speed, and SATA is newer technology.
How fast can a SATA drive transfer data?
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
disk rotational speed in RPM
Speed of sata 1 is 1.5 Gbps Speed of sata 2 is 3 Gbps
Yes, SATA II (SATA 3 Gb/s) devices are backward compatible with SATA I (SATA 1.5 Gb/s) interfaces. This means that you can connect a SATA II hard drive or SSD to a SATA I motherboard, but the drive will operate at the lower SATA I speed. However, if you connect a SATA I drive to a SATA II interface, it will run at the SATA I speed as well.