I use maximus 7 ranger, and I can only manage to get more than 5 gpu with not using overclock even XMP ram (2100 ram only 1600 now)
Overclock has nothing to do with the mb detecting cards bro! plus why would you OC your RAM just leave it at default should be 2133MHz
This is what i understood from you post unless i've missed something please elaborate would be happy to help
