I've got one board that hashes at full speed, but puts out about 75% hardware errors. I tried another board with the same power/usb cable and it works just fine. I've got three boards up and running on three different computers at the moment. They all seem to be averaging about 21.8 gigahashes at the recommended start settings.
Chad
What are your "starter" settings?
My current settings are --drillbit-options int:53:2:850 This produces slightly higher results than 'stock' (int:40:1:850).
had some issues with 950, but will continue exploring