HI ALL
I have 6 x msi rx470 8g gaming x setup in a H81 pro BTC board and I cannot get the sixth card to run. I have tried everything. Is it still the case that 6 rx 470 cards will not run on windows 7?
Try smOS. You can find its ANN thread over here.
https://bitcointalk.org/index.php?topic=1541084Please next time when you want to ask for info it'd better to open a new thread rather than bumping a five month extinct one

Windows 10 works out-of-the-box with 6x GPU everytime for me with 400-series cards
You might be thinking the 500-series. I definitely had a lot of trouble with it, but finally got 6x 570's working.
Did you find the solution to making 6 of them work together by yourself or what? If yes, it'd be appreciated to create a thread and say how you did it.