DRAM must have sufficient capacitance in the gates to hold up between the refresh cycles and it takes time for that capacitance to charge and discharge and the rate of charge and discharge is limited by the impedance of the circuit and resistance of the gate which is not so easy to decrease...
Thanks for the replies and info, I wont be using the encoders just 7.1 PCM output to a VSX-930 via HDMI if that's possible, for years I've had to suffer the nusance of having a part of the desktop that I cannot use with things hiding off screen and having to unplug it so I can see the post...