What is SATA 11 and SATA 111? I've never heard of that. Unless you are talking about SATA II and SATA III. Maybe I need to learn something new here.
ram1220, here is an explanation of SATA I, II and III.
Difference between SATA I, SATA II and SATA III
SATA I (revision 1.x) interface, formally known as SATA 1.5Gb/s, is the first generation SATA interface running at 1.5 Gb/s. The bandwidth throughput, which is supported by the interface, is up to 150MB/s.
SATA II (revision 2.x) interface, formally known as SATA 3Gb/s, is a second generation SATA interface running at 3.0 Gb/s. The bandwidth throughput, which is supported by the interface, is up to 300MB/s.
SATA III (revision 3.x) interface, formally known as SATA 6Gb/s, is a third generation SATA interface running at 6.0Gb/s. The bandwidth throughput, which is supported by the interface, is up to 600MB/s. This interface is backwards compatible with SATA 3 Gb/s interface.
SATA II specifications provide backward compatibility to function on SATA I ports. SATA III specifications provide backward compatibility to function on SATA I and SATA II ports. However, the maximum speed of the drive will be slower due to the lower speed limitations of the port.
Example, SSD HDD's, which supports SATA 6Gb/s interface and when connected to SATA 6Gb/s port, can reach up to 550/520MB/s sequential read and sequential write speed rates respectively. However, when the drive is connected to SATA 3 Gb/s port, it can reach up to 285/275MB/s sequential read and sequential write speed rates respectively.
Another example is, I've got a Samsung 850 EVO SSD drive which is at 6Gb/s (its my boot drive) and is a SATA III and a WD WDC5000BEVT drive which is a 3Gb/s (its my slave drive) and is a SATA II, this is installed in a 8 year old laptop with its last BIOS update of 2013 that handles the Samsung SSD 6Gb/s perfectly and can reach up to 285/275MB/s sequential read and sequential write speed rates respectively. My old laptop works perfectly and extremely well with the Samsung SSD and has made it exceptionally quick and its virtually a brand new laptop.