03-02-2014, 08:10 AM
O.k., I did further investigations. The problem is NOT that it´s the 2nd card, but obviously the card itself. I put the 7790 in another computer, made a clean new setup of both, Windows 7 and Ubuntu 13.10 with the actual drivers.
Same result, card gives only about 1700 MH/s on Linux, but 6000 on Windows.
Same result, card gives only about 1700 MH/s on Linux, but 6000 on Windows.