atapi is da name they called it (4got what it was called) that allow the use of non-hard drive device on the same IDE data cable along side a hard drive.
i thought that didnt matter because each device had its own port and the reference to atapi was only for older IDE devices.
i think da main differences are how da pci-e lanes are used and how it might affect other pci-e device bandwidth. i think the marvell chipset shares it lane with da x4 r x1 slot so if u use that and have a x4 device it might slow one of them down. (correct me if im wrong). The other difference is speed. i think intel chipset run abit faster then marvell (again correct me if im wrong)
i already used both the 6gb cables on my SSD and HDD, would it be more efficent to hook up the DVD drive with the remaining 3gb cable into a 6gb socket, would there be compatibility issues or no benifit what so ever?
sata 3 is backwards capable so if u use the 3gb/s wire for the dvd it will work. like what nikorr said makes no diff if u use da 3 r 6gb wire since the dvd drive will not even use all da bandwidth provided by sata II.