Hi guys..I have a question. Are SATA 2 technology made in motherboards or it is hard disk dependend? I have purchased a SATA hard disk this year ,Feb,and I don't know whether it is SATA or SATA2.I mean,when I connect this hard disk supporting SATA2 motherboards,will I attain 3/Gbs and if I connect the same hard disk on motherboards that don't support SATA2,I will attain 300/Mbs.Am I right on this ground.Can someone correct me the areas or where I need more info !!!! Thanks for all the help ! Computers Does Everything..Except ! Fix themselves..

http://www.serialata.org/docs/serialata%20-%20a%20comparison%20with%20ultra%20ata%20technology.pdf

"when I connect this hard disk supporting SATA2 motherboards,will I attain 3/Gbs" The data transfer rates are theoretical. You will NOT attain 3GB/s...EVER! SATA/SATA2 transfers rates are only marginally faster than IDE/ATA transfer rates.

Yeah! You won't even get nowhere near SATA150's 1.5Gb/s in sustained speed - "Up to" is a favorite term for any marketing guru.

Both the board and the drive need to be SATA2. If one is SATA1 and the other is SATA2, then you will slow down to SATA1 speed. However, as the previous posts said, don't concern yourself with which SATA you have since no drive has the capacity to saturate even SATA1's 150GB/s top speed. At this point, those speeds are, to quote Jam, theoretical.

Agree 100% with everything above. However, one thing to note. The fact that the SATA interface bandwidth (1 or 2) cannot be saturated by a single drive does not mean the bandwidth is theoretical. It is possible to connect multiple drives to a SATA port through the use of a multiplier. As you add more drives, the interface becomes the bottleneck, not the drive(s). Of course, this is not relevent in most personal/home environments - yet. Quote: "While it is possible to connect up to 15 drives to each SATA PM port via a port multiplier, drive connectivity is practically limited to the maximum available bandwidth on the 3Gb/s link. Sustained I/O rates from the drives are kept to within the 3Gb/s host port connection limit for maximum efficiency and performance." http://www.sata-io.org/portmultiplier.asp Michael J