I beg to differ, the thing that make the original AMD64 chips so freakishly awesome was multiple memory controllers in a multi-socket system. That forced Intel to do something kinda similar but the Opteron line and then the Ryzen and EPYC lines have always been better than Intel in terms of raw memory bandwidth[1].
And when there was a clear need for the bandwidth, as in GPUs, circuit designers stepped up and created some amazing wide and deep memory bus architectures.
I would not be surprised to see AMD partner with IBM to utilize some of their EDRAM tech to keep themselves out ahead of Intel in the data center space. The more ways they can distinguish themselves, the more pressure they put on Intel's design teams.
[1] Yes, lookaside buffers and page tables in the Opterons took some of that advantage back, but it was still substantial.
And when there was a clear need for the bandwidth, as in GPUs, circuit designers stepped up and created some amazing wide and deep memory bus architectures.
I would not be surprised to see AMD partner with IBM to utilize some of their EDRAM tech to keep themselves out ahead of Intel in the data center space. The more ways they can distinguish themselves, the more pressure they put on Intel's design teams.
[1] Yes, lookaside buffers and page tables in the Opterons took some of that advantage back, but it was still substantial.