The theoretical throuputmaximum of the UWSCSI on the CSPPC and CSMKIII should be 40MB/s. According to the definition of the UWSCSI-standard (AFAIK).
I managed to get 23 MB/s out of my best drive in real live.
I heard of people to reach as much as around 30 MB/s. 15 MB/s should be archived easyly by any UWSCSI-drive on that controller in syncronus mode.
