We are happy with 60000K/s, it's a backup device on S/W RAID5, and we can get over 40MB/s average on NFS, which is impressive enough.
What puzzles us is that we have to enable Intel RAID on M/B, otherwise LITE sees no units.
Maybe it's just this M/B model. By the way, under M/B RAID mode, SATA enhanced mode is default.