Ram Bus Speed

no one of my corsair vengeance 8gb ram is already installed and has the max bus of 1600 , it would be useless to check for my motherboard manual , can't have two Rams on different bus speeds

 


Will it be a problem to have a corsair vengeance 8gb 1600 and another 8gb hyper x fury 1866 downclocked at 1600 , is it bad to have two Rams of different brands ? Sorry I know it's a silly question
 

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+1 ANY time you mix DRAM from different packages, even those of the same exact model, it can be and often is problematic