Purchased 6 of the ASUS RX480 Ref Cards, running on a H97 MB. Have tried 1 card, 3 cards, USB powered risers, 1 card direct to the MB. I cannot seem to coax more than 6 Mh/s, usually less out of any one card. I am afraid to open the remaining cards. Lots of reading, not seeing anyone else with a similar issue.
Any Thoughts? @kotarius