2^x = 64 July 8, 2019 16 32 64 128 2 x 64 Ram 2 x 64gb 2 x 64 bit channel 2 x 64 solve 2 x 640 2 x 64 gb ram ddr5 2 x 64gb ddr5 2 x 648 2 x 64000 2 x 6400 2 x 64gb 2 x 64 bit dual channel 2 x 649 2 x 643 2 x 6480