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Ryzen 4000 (Zen 3) on AM4

Journal by takyon

AMD Ryzen 4000 CPUs With 7nm+ Zen 3 Cores & X670 Flagship AM4 Platform Arriving End of 2020

* It looks like Zen 3 will be the last generation on AM4, then Zen 4 will move to AM5, adding support for DDR5 and PCIe 5.0.
* Since it's a little over 12 months between each release, you could see Zen 3 in Q4 2020 and Zen 4 in Q1 2022.
* Rumors about Zen 3 performance range from +8% IPC and +200 MHz to over 15% IPC increase and higher core counts. A core count increase (e.g. 12 cores per chiplet or more chiplets) seems unlikely to me, but "7nm+" might make it possible (20% greater transistor density).

Things to watch out for in January:

* 64-core Threadripper 3990X
* Possible 48-core Threadripper 3980X, which AMD may have decided is not worth releasing. You are probably either good with 32 cores or want as many as possible.
* Possible 8-channel memory for Threadripper
* Zen 2 APUs with up to 8 cores
* Use of either Vega or Navi graphics for the Zen 2 APUs
* Any improvements to media decoding? Such as AV1 or 8K. Is it called Video Core Next, Radeon Multimedia Engine, or both?
* LPDDR4X support?
* Possible successor to the fanless A6-9220C, with at least the +52% higher IPC of Zen.
* Possibly more details about ray tracing for the next-gen consoles.

 

Reply to: Re:96c/384t

    (Score: 3, Informative) by takyon on Monday December 02 2019, @07:09PM

    by takyon (881) <{takyon} {at} {soylentnews.org}> on Monday December 02 2019, @07:09PM (#927286)

    https://www.notebookcheck.net/AMD-reveals-details-on-upcoming-Zen-3-Milan-and-Zen-4-Genoa-EPYC-server-CPU-architectures.437534.0.html [notebookcheck.net]

    AMD showed off its EPYC roadmap at the HPC-AI Advisory Council UK conference this past weekend and revealed a few details about the Zen 3 (“Milan”) and Zen 4 (“Genoa”) EPYC CPUs. Milan is set to release sometime in 2020 and seems more like a refinement of Rome than anything else. Although it retains many of the same features of Rome, Milan will be built on AMD’s new 7nm+ node process, which should increase performance with some slight improvements to energy efficiency. Milan will keep the same 64 core maximum as Rome and will be compatible with the SP3 socket. Somewhat disappointing is confirmation that Milan CPUs will have only two threads per core, counter to earlier rumors of SMT4 (four threads per core) showing up as early as Milan.

    This suggests a repeat of 64c/128t for Zen 3 Epyc. Moore's Law Is Dead [youtube.com] also backed off on SMT4 and other features for Zen 3.

    Zen 4/5 is probably when we should expect core count increases. Depends on the node. TSMC may be gently forcing AMD to use certain nodes since AMD is not the priority customer. The "5nm" node should be more than enough for 50% more cores, possibly 100%.

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