I didnt clock my cpu yet. But something else happened when i came home from my trip, i got black screen when i started up windows.
I was afraid that one of my cards are defected, so i put out each one but they worked perfectly as a single one.
I made clean install of drivers, rebooted pc, after that i put back my 2nd card in slot.
Well now i feel kinda stupid but that fixed all the fps issues in bf3. now i drop to 85=90 fps when i see some hardcore action other wise its 110-120 +++ fps.
Thank you people for all reply's. Im off to play some bf3 >D