So i hooked up 5&6 and it crashes, pull the sixth card and system runs fine. Swaped the cards and tried again and still crashes the system so its either a video card driver or an issue with pci slot #6. Remove 6th cars and system works.  I am going to try a powered riser on slot #6 and see if it helps(though it was fine on scrypt but maybe it has something to do with the way the power is handled on x11).  For now my 4gb r9 270x gigabyte cards are running 12.5Mh/s avg on 5 cards, and i am pulling 650 watts compared to 1100 watts


One thing i have noticed is the stats page for my miner varies Mh/s drastically, while my miner never shows a drop less than from 2.8 to 2.5 per card, the page will show from like 8 to 15, is that odd for x11?