IDE was how you connected hard drives, CD-ROM drives, etc. before SATA came along and sped everything up. It's only awesome if you really needed it for compatibility with older hardware.
Oops, i meant 8 And 6 are SATA2, not SATA3... Well, i do have an older junk drive that i dont know whats on it.... I guess ill try it I just found out about this cool feature when i opened the mobo.....