[twix]

Thanks for all the answers and the info. Some points:
- I have used the proper SD formatter, using exFat on a Samsung 64Gb Pro Plus.
- my disk (Quantum Atlas V with converter to 50 pins) does not perform any better. The numbers are about the same.
- the diskperf results for the Indy in the thread referenced directly above are much better (>> 5 Mb/s for large blocks), and that uses the same SCSI controller.