I just had to test how the ICH10R would stack up against the Marvell 9128 SATA III on-board controller, and the RocketRAID 640 addon-card SATA III controller ...
This is what the onboard ICH10R could do with the two Intel 510 120 GB SSD's ...

.
Funny s***! :-) Compare it to the other
charts.
Anyway, the RocketRaid gives a nice 180 MB/s read-increase over the onboard ICH10R. So overall I'm happy with my investment, and I'm glad for your help and tips!
Regards
Kyrre