AMD already said publicly that memory BW will be 1.5x higher with Interlagos,with the same number of mem. channels(4). This is achieved partially by improved/redesigned IMC(30%) and support for higher clocked DDR3 memory (20%;1333->1600Mhz).
Zambezi should support 1866 memory and have the same redesigned IMC with the same 30% uplift versus Thuban's.
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