Dynatron Listing Reveals AMD EPYC Verano AI CPU Uses New SB1 Socket

A listing from server cooling manufacturer Dynatron reveals that AMD’s upcoming EPYC 9006-series 'Verano' CPUs will utilize a dedicated SB1 socket. This discovery, first identified by InstLatX64, indicates that these processors, designed specifically for AI server host roles, will require different cooling infrastructure than other models in the EPYC lineup.

The SB1 socket is reportedly smaller than the SP7 and SP8 sockets used by other Zen 6-based EPYC processors. According to the Dynatron listing, this change in physical dimensions necessitates distinct power delivery and cooling requirements. The leak provides the first concrete evidence of the mechanical specifications for the Verano series, which AMD has not yet officially detailed regarding socket dimensions or capabilities.

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Technical Specifications and Design

AMD positions the Verano processors as host CPUs for AI servers, where they primarily orchestrate workloads for AI accelerators rather than delivering maximum general-purpose computing performance. The chips will feature up to 72 Zen 6 cores operating at speeds of up to 5 GHz. They will also include a massive 24-channel LPDDR5X memory subsystem that utilizes replaceable SOCAMM2 modules, a configuration distinct from standard EPYC memory architectures.

The specialized nature of the Verano CPU suggests that AMD may not offer a broad range of SKUs typical of its general-purpose EPYC families. If the processors are deployed in systems with a fixed number of Instinct accelerators, AMD could limit offerings to one or few configurations. This approach would ensure a consistent ratio of CPU cores, memory bandwidth, and host-to-accelerator connectivity per GPU, simplifying system qualification and power management.

Industry Context and Cooling Solutions

The decision to create a dedicated SB1 socket mirrors strategies used by competitors like Nvidia with its Grace and Vera processors. By optimizing the socket for specific CPU SKUs and system topologies, AMD can streamline the integration of 24-channel LPDDR5X memory and accelerator connectivity. This contrasts with the SP7 socket, which supports up to 256-core EPYC 'Venice' processors, and the SP8 socket, designed for models with up to 128 cores.

Dynatron’s preliminary SB1-4U-Active cooler provides the first indication of the thermal requirements for Verano. The 4U unit measures 128.05 x 106.6 x 130.7 mm and employs an aluminum fin stack combined with a vapor chamber and heat pipes. This hardware suggests that despite being a host processor, the Verano CPUs will generate significant heat requiring robust, specialized cooling solutions rather than standard server air cooling.

What should you do?

System integrators and data center planners should monitor official AMD announcements for detailed SB1 socket specifications and compatibility lists. Infrastructure teams preparing for AI server deployments should evaluate whether existing SP7 or SP8 chassis can accommodate the new, smaller SB1 form factor or if new hardware is required. Procurement departments should track the release of SOCAMM2 memory modules to ensure supply chain readiness for the 24-channel memory subsystem.

What to do and how to stay safe: AMD

• Monitor official vendor channels for confirmed SB1 socket specifications and mechanical drawings before finalizing server chassis designs.
• Evaluate current data center cooling infrastructure to ensure it can support the specific thermal requirements of the new 4U active coolers.
• Plan procurement strategies for SOCAMM2 memory modules, as the 24-channel LPDDR5X subsystem requires specific replaceable memory units.
• Review system topology requirements to determine if the limited SKU approach for Verano aligns with your specific accelerator-to-CPU ratio needs.

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Frequently asked questions

What socket will AMD's EPYC Verano CPUs use?

According to the Dynatron listing, AMD's EPYC 9006-series 'Verano' CPUs will use a new SB1 socket, which is smaller than the SP7 and SP8 sockets.

How many cores will the Verano processors have?

The Verano CPUs will feature up to 72 Zen 6 cores operating at speeds of up to 5 GHz.

Is there a confirmed fix or patch for this?

This is a hardware specification leak, not a security vulnerability, so no patch or fix is applicable.