12-14-2014, 08:33 PM 
		
	
	
		That's simple to explain. AMD OpenCL simply does not support more than 8 GPU's. Since you have dual-GPU card, you can only use 4.
You can say thanks to AMD.
	
	
	
	
You can say thanks to AMD.
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					4 graphic cards->ok, 5 graphiccards -> not ok
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