I am looking for a SSHD drive for my Intel D946GZIS motherboard. My board is only SATA II compatible or 3Gb/s.I am looking at a Seagate Desktop 2 TB Solid State Hybrid Drive SATA 6 GB with NCQ 64 MB Cache 3.5 Inch (ST2000DX001). Now I am not sure if this drive will work with my motherboard. Can anybody help me, thanks.
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SATA was designed to be backwards compatible. What this means in your case is that you can certainly use a SATA III drive with that motherboard but you'll only get SATA II performance from it, as dictated by the motherboard specs.
Phillip is correct. But the news is better than that. Mechanical (rotating disks) HDD's cannot come close to SATA II (more properly, SATA 3.0 Gb/s) speeds - they perform more like older SATA I, in fact. That includes the actual mechanical drive portion of the hybrid unit you are buying. However, SSD's (and the SSD portion of your hybrid unit) do reach the SATA 3.0 Gb/s data rate, and sometimes exceed that by a bit. They do NOT get close to the SATA 6.0 Gb/s rate, though. So, you WILL see substantial improvement in HDD performance by using the hybrid unit. And yes, it will work on your machine, as Phillip said.