Remember to separate the fact that SATA is a bus interface and a hard drive is just that - an independent device with its own I/O capabilities. So, the upshot: If you have SATA 1 mechanical hard drives that are currently functional and provide sufficient storage for your needs, there is no significant advantage (>10% in my book) to upgrading to SATA 2/3 mechanical hard drives. In contrast, it seems that the SATA 2 & 3 specifications are more to pave the way for solid state drives which seems to be the general trend. So, the purported transfer speeds of current mechanical SATA 2/3 hard drives are more for "compatibility" than for actual increases in transfer speeds. Surprisingly, there seems to be a scarcity of information, hence my new post.įrom what I can garner, a mechanical hard drive has yet to sustainably saturate the SATA 1 (1.5GB) interface. I've done a number of google searches and on this forum to see what information exists. So, I started out this morning with what I thought was a simple question:Īre there significant real-life transfer rate differences for mechanical SATA 3(6Gb)/2(3Gb)/1(1.5Gb) hard drives?
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