As part of AMD's Financial Analyst Day 2022, AMD unveiled an updated server CPU roadmap up to and including 2024. Nestled within AMD's latest server roadmap, it highlighted the Siena series, much like the Genoa (due Q4 2022), Bergamo (Due 1H 2023), and the Siena family from its 4th gen EPYC series are expected to land sometime in 2023. While roadmaps only give a glimpse of what is expected, they are used internally to plot and plan specific product groups and keep them on track for release.

The AMD Siena family of 4th generation EYPC processors are slightly different from Genoa and Genoa-X because Siena is primarily designed for the Edge and Telecommunication industries. Siena will feature up to 64 Zen 4 cores, and AMD states it will be a lower-cost platform in comparison to Genoa, Genoa-X, and Bergamo, all of which will be based on AMD's Zen 4 core architecture and TSMC's 5 nm and the even more highly optimized 4 nm process node.

AMD's Siena family of EPYC 7004 products will likely be compatible with the SP5 platform that launches alongside Genoa in Q4 2022. SP5 features support twelve channels of DDR5 memory and PCIe 5.0 lanes, but it is unclear how AMD intends to package its Siena family in terms of die layout or whether it will feature a cut-down feature set to make it more affordable. 

We expect AMD to unveil more about Siena soon, and AMD states that Siena will be coming sometime in 2023.

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  • Kamen Rider Blade - Thursday, June 9, 2022 - link

    What if "Siena" is a updated SP3 based platform?

    It could be SP3r5 with support for 8x Channels of DDR5, PCIe 5.0, etc.

    It would fit most existing SP3 based Server MoBo's, chasis, cooling, etc.

    Familiarity is a good thing to those in Enterprise, just update what you have to the latest specs and make it cheaper to target vendors who don't need SP5.

    That's my Food for Thought.
  • Shorty_ - Thursday, June 9, 2022 - link

    There's rumours of another smaller socket called SP6.. 4CH Memory, 135W TDP. sounds like a good fit here.
  • AdrianBc - Friday, June 10, 2022 - link

    I doubt that Siena will use the SP3 platform.

    This is positioned as a competitor for the Intel Xeon D, for which AMD did not have an alternative until now.

    Therefore I expect that Siena will use soldered BGA packages, like Intel Xeon D, for the lowest cost and smallest size.
  • Bik - Friday, June 10, 2022 - link

    low cost, low single thread, low end parts, high core count -> may end up in my desktop for pre-processing workload.
  • Kevin G - Friday, June 10, 2022 - link

    My curiosity is if CLX support will be maintained in this market segment. That's a big thing for server but not so much telco, especially if the package were to include some native network connectivity.

    The number of memory channel is unknown which I would guess be either 4 or 6 depending on the market demands. My guess would be four and those use cases that need tones of memory will just run two slots per channel.

    As rumors have already swirled, this would be a good basis for a HEDT/workstation system as it sits between the consumer AM5 and server SP5 configurations.
  • Oxford Guy - Saturday, June 11, 2022 - link

    Sounds like ThreadRipper except for 'optimized perforance-per-watt'.
  • Lakados - Sunday, June 12, 2022 - link

    I’m hoping this is a long needed update to the EPYC Embedded platform.
  • zanon - Thursday, June 23, 2022 - link

    Same, while my EPYC Embedded 3k devices have served very well they're also getting very long in the tooth at this point. Particularly for routing at 25-100gig it'd be great to move from Zen 1 to Zen 4 while still maintaining a TDP of <75w (an EPYC 3251 is about 50W typical but I could handle a small increase at the highest clocks). Everyone focuses on the super high end HPC stuff etc but the relatively power sipping ones are workhorses for a lot of applications.
  • Foeketijn - Friday, July 8, 2022 - link

    Exactly! I can't believe how this part of the pie is ignored this much. I thought the Epyc 3000's would be in the 200 euro region. And the onboard ryzens 100 tops.
    It just needs to be to run Win SBS or nethserver, Or a home grown VM server with a couple of dorment VM's. The CPU power of any Ivy bridge with at least 4 threads will do. But prefferably with 20W stressed max.

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