Sorry if that was confusing. I was trying to communicate a generality about multiple very different means of accessing the memory: the way we currently build GP

Sorry if that was confusing. I was trying to communicate a generality about multiple very different means of accessing the memory: the way we currently build GPUs is a local maximum for performance. Changing anything, even putting dedicated memory on sockets, has a dramatic and negative impact on performance. The latest board I've worked on saw the layout team working overtime to place the memory practically on top of the chip and they were upset it couldn't be closer. Also, other systems have similar technologies, I'm just mentioning Nvidia as an example.