AMD physical addressing massive advantage over Intel?

Discussion in 'Processors and motherboards AMD' started by Exascale, Jun 27, 2017.

  1. Exascale

    Exascale Banned

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    Gigabyte G1 1070
    I was reading some specs for Ryzen, Threadripper and Epyc(which are all the same basic die).

    I noticed that someone had listed them as having 48bit physical memory addressing, meaning a maximum shared memory of 256TB. Intel only has 46bit physical addressing, meaning 64TB maximum.

    SGI has sold 64TB UV systems and cant go bigger, because of Intels memory limitations. I wonder if we will see SGI, Cray or others start making Epyc based large NUMA systems with >64TB of memory, which apparently some customers have been asking for.
     

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