Question: what is the difference between sata 2 and sata 3?
Answer: SATA II (previously called SATA 3Gb/s) – The second generation of the SATA interface ran at 3Gb/s and had a bandwidth throughput of 300MB/s. SATA III (previously called SATA 6Gb/s) – SATA's third generation runs at 6Gb/s and has a bandwidth throughput of 600MB/s.