You should avoid connecting the Intel X25-M to SATA3. My Vertex was not performing at peak there. I guess you need a SSD with a SATA3-controller to take advantage of that 6Gb/s. I suggest you connect the Intel X25-M to SATA2-port#1 on ICH10R. You can connect the WD on SATA2-port#2 on ICH10R too, and the burner on Gigabyte SATA2.
That's how I connected my Vertex (OS-disk) + Samsung F1 + burner after a few tests.
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