AMD on Tuesday formally announced its next-generation EPYC processor code-named Rome. The new server CPU will feature up to 64 cores featuring the Zen 2 microarchitecture, thus providing at least two times higher performance per socket than existing EPYC chips.

As discussed in a separate story covering AMD’s new ‘chiplet’ design approach, AMD EPYC ‘Rome’ processor will carry multiple CPU chiplets manufactured using TSMC’s 7 nm fabrication process as well as an I/O die produced at a 14 nm node. As it appears, high-performance ‘Rome’ processors will use eight CPU chiplets offering 64 x86 cores in total, as well as an eight-channel DDR4 memory controller supporting up to 4 TB of DRAM per socket. Besides, the new processor supports 128 PCIe 4.0 lanes to connect next-generation accelerators, such as the Radeon Instinct MI60 based on the Vega 7nm GPU.

Considering the fact that Zen 2 microarchitecture is expected to generally increase performance of CPU cores (especially when it comes to floating point performance, which AMD expects to double), the Rome processors will boost performance of servers quite dramatically when compared to existing machines. In particular, AMD expects performance per socket to double as a result of higher core count, and predicts that floating point performance per socket will quadruple because of arhitectural IPC improvements and increase of the core count.

One important peculiarity of AMD’s EPYC ‘Rome’ processor is that it is socket compatible with existing EPYC ‘Naples’ platform and will be forward compatible with AMD’s future ‘Milan’ platforms featuring CPUs powered by the Zen 3 microarchitecture. This will greatly simplify development of AMD-based servers and will enable server makers to reuse their existing designs for future machines, which is important for AMD that needs to capture market from Intel. To do that, it has to simplify job of server builders by making its platforms simple.

AMD is currently sampling its EPYC ‘Rome’ processor with server makers and customers. The company plans to launch ‘Rome’ products sometimes in 2019, but it does not disclose its launch schedule just now.

This is a breaking news. We are updating the news story with more details.

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  • DigitalFreak - Tuesday, November 6, 2018 - link

    I'm assuming that's 8 chiplets with 8 cores per, and not 4 x 16?
  • yeeeeman - Tuesday, November 6, 2018 - link

    Yep, looks like it.
  • yeeeeman - Tuesday, November 6, 2018 - link

    This is great stuff from AMD. I love the fact that they like to take risks and try new stuff all the time. They always try to find a better/cheaper solution to do what others (read Intel) do. If well executed, this CPU has the chance to completely leave the competition in the dust.
  • 0ldman79 - Tuesday, November 6, 2018 - link

    Looking forward to it.

    Betcha we're going to have a 16 core 3700 or something along those lines on AM4.

    That'll work, by the time I'm ready to upgrade 16 cores should be the high end mainstream. I'm good with that.
  • Dug - Tuesday, November 6, 2018 - link

    Too bad Windows server is now per core instead of per socket. For good ol' 2012 r2 this cpu would make sense to upgrade too.
  • Dug - Tuesday, November 6, 2018 - link

    Looks like $24,640 per cpu.
  • John_M - Tuesday, November 6, 2018 - link

    Then the sensible thing would be to use Linux instead.
  • C@mM! - Tuesday, November 6, 2018 - link

    Oh my dear god my server licensing costs since we moved to Server 2016 \ Epyc
  • jospoortvliet - Wednesday, November 7, 2018 - link

    Tell ms you move to linux and see what discount you get. If not enough- move and spend the €£¥ on a party ;-)
  • jjj - Tuesday, November 6, 2018 - link

    The memory channel count and number of PCIe is your assumption? It's much more likely that the old chipset and mobos do not take full advantage of what Rome has to offer.
    Plus , since they have the IO die, they can go IO crazy with this one and would be a pity to bottleneck 64 cores with a lack of IO.

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