I just consolidated a batch of 9 GPU's (470's mining edition) into a Asrock 110BTC.
In MS Windows disabled the on-board Intel GPU and there is 16GB RAM.
The cards normally pull about 29Mh/s but for some reason the last card seems to drop to 25Mh/s.
Has anyone seen this before where the last card is lower and I am using Claymore !?