Only ETH in linux.
Just tested my rig with my old usb linux installation and it seems OK. Also the 750ti should be somewhere where it was. Getting 110MH with 980 +3x970 +960 +750ti. Power at the wall shows exactly 900W.
In windows I got 96MH without 750ti. But there is also a memory OC of all the cards 750ti=6300Mhz, 960=7500Mhz, others to 7700Mhz. I somehow succedeed to put the cards into the higher power state and OC also the memory. I couldn't find a way in windows for that.
Hi dominuspro
I think you are wrong about 750Ti. I also tested this card a week ago, and can prove that TLB is definitely an issue. Yep, in benchmark mode i got 18 mh\s from 2 750Ti cards. but during benchmark DAG file is aroung 1G only, but if you will try real mining it will be more that 1G, as a result i got only 5mh\s from 2 cards on real pool.
But 980/970/960 still can mine well.
If you want to recheck my test - just remove all your hi-end cards and leave 750 Ti only in your rig for test.
P.S. let me know if you will have different result.
P.S.S that's on linux of course.