Build1 publisherNot yet confirmed elsewhere2 min readPublished
Dynatron cooler listing puts AMD's Verano AI host CPU on a smaller SB1 socket
AMD's EPYC Verano AI host CPU will use a new SB1 socket, smaller than SP7 and SP8, according to a listing at cooler maker Dynatron. Verano gets its own board, while the cooler listed for it copies an SP7 part's specs and leaves the power budget unknown.
The Engineer · Build desk

What happened
- Verano pairs up to 72 Zen 6 cores at up to 5 GHz with a 24-channel LPDDR5X memory subsystem built on replaceable SOCAMM2 modules.
- AMD positions the chip as a host processor whose main job is orchestrating workloads that run on AI accelerators.
- Dynatron's preliminary SB1-4U-Active is a 4U vapor-chamber air cooler whose fan spins at up to 6,000 RPM and moves up to 91.7 CFM.
- AMD itself has not disclosed SB1's specifications, dimensions or capabilities.
- AMD plans to launch Verano in the second half of 2027.
Compiled by The EngineerSomething wrong?How this is made
Why it matters
- constraint SP7 and SP8 motherboards cannot take a Verano part, so operators adding AI racks must qualify a second board family alongside any Venice fleet.
- decision Chassis teams cannot size Verano airflow or power from this listing; that decision has to wait for a TDP from AMD.
- precedent If AMD follows Nvidia's Grace and Vera with one or a few fixed SKUs, as Tom's Hardware speculates, buyers would get the CPU as part of a set accelerator ratio with little SKU choice.
SP7 carries EPYC Venice parts with up to 256 cores, and SP8 is built for models with up to 128 [5]. Verano tops out at 72 [3], about 28 percent of the SP7 ceiling [11]. Its job is to feed accelerators [4].
Tom's Hardware explains the new socket as specialization. If Verano goes into systems with a fixed number of Instinct accelerators, AMD could offer one configuration or a handful. That would hold cores, memory bandwidth and host-to-accelerator links per GPU constant [12]. Nvidia does the same with Grace and Vera, the outlet noted [12]. On that reading, SB1 is tuned for a few SKUs, the 24-channel LPDDR5X subsystem and one system topology [13]. Tom's Hardware also told readers to "consider our thoughts speculation for now" [15].
The socket alone settles the board question. A Verano host needs an SB1 board [1]. A team running SP7 or SP8 machines today will therefore qualify a second motherboard for its AI racks. I'd put that on the plan now.
The thermal question is still open. Tom's Hardware reports that SB1, being smaller, will have different power and cooling needs [2]. The listing, spotted by InstLatX64, says Verano requires different cooling from the rest of the lineup [1]. The cooler on that listing, though, matches Dynatron's J26 4U cooler for SP7 almost exactly, down to similar dimensions [8]. The outlet gives two explanations: Dynatron reused the J26 design, or it pasted J26's numbers onto the page as placeholders until the SB1 part is finished [8]. Either way, the SB1 page currently describes an SP7 cooler under a new name [8].
Dynatron does not state the cooler's maximum supported processor power, so the page cannot pin down Verano's TDP [9]. Tom's Hardware still takes the large vapor-chamber cooler as a sign that Verano will draw a lot of power despite its lower core count [14]. That inference uses figures that may belong to the SP7 cooler [8].
In my view, Verano hosts belong on their own board qualification track now [1]. The chassis airflow budget is a separate decision, and it can wait. On this record, the only cooling hardware tied to SB1 shares its specification with Dynatron's SP7 air cooler [8].
What to watch
- AMD publishing SB1 specifications and a Verano power figure, the data needed to decide whether its thermals differ from SP7 parts.
- A finalized Dynatron SB1-4U-Active page that states a maximum supported processor power, and whether its specs then diverge from the J26.
- AMD's Verano SKU count; one or two SKUs would support the fixed-ratio reading Tom's Hardware offered.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence38
- Adoption
- Insufficient
- Hype gap+8
- Incentives
- Insufficient
- Confidence45
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
According to a listing at Dynatron discovered by InstLatX64, AMD's EPYC 9006-series 'Verano' CPUs designed for AI servers will use an all-new SB1 socket and will require different cooling systems than other processors in the lineup.
ReportedSupportedSource: Tom's Hardware, citing a Dynatron listing found by InstLatX64View cited source - [2]
The SB1 socket will be smaller than the SP7 and SP8 sockets for other Zen 6-based EPYC CPUs and will therefore have different power and cooling needs.
- [3]
Verano will feature up to 72 Zen 6 cores operating at up to 5 GHz and a 24-channel LPDDR5X memory subsystem that uses replaceable SOCAMM2 modules.
- [4]
AMD positions Verano as a host processor for AI servers, where CPUs primarily orchestrate workloads running on AI accelerators rather than provide maximum general-purpose performance.
- [5]
SP7 accommodates up to 256-core EPYC 'Venice' processors; SP8 is designed for models with up to 128 cores.
- [6]
AMD has not disclosed SB1's specifications, dimensions, or capabilities.
- [7]
Dynatron's preliminary SB1-4U-Active cooler is a 4U unit measuring 128.05 x 106.6 x 130.7 mm with an aluminum fin stack, vapor chamber and heat pipes, and a double-ball-bearing fan that runs at up to 6,000 RPM and delivers up to 91.7 CFM.
- [8]
The SB1-4U-Active's specifications are virtually identical to those of Dynatron's J26 4U cooler for AMD's larger SP7 CPUs, with similar dimensions; this may mean Dynatron reused the J26 design or copied J26's specifications onto the page as placeholders until the cooler is finalized.
- [9]
Dynatron does not specify the cooler's maximum supported processor power, so the listing cannot currently be used to determine Verano's TDP with confidence.
- [10]
AMD plans to launch Verano in the second half of 2027.
- [11]
Verano's maximum of 72 cores is about 28 percent of the 256-core ceiling of SP7 Venice parts.
- [12]
If Verano is deployed in systems with a predetermined number of Instinct accelerators, AMD could offer just one or a small number of CPU configurations to ensure a consistent ratio of CPU cores, memory bandwidth, and host-to-accelerator connectivity per GPU, something Nvidia does with its Grace and Vera processors.
ReportedInsufficientSource: Tom's Hardware analysis, labelled speculation2 sources— create a free account to open themView cited source - [13]
SB1 could be optimized for one or a few CPU SKUs, their 24-channel LPDDR5X memory subsystem, and a particular system topology.
ReportedInsufficientSource: Tom's Hardware analysis, labelled speculation2 sources— create a free account to open themView cited source - [14]
A large vapor-chamber-based 4U active cooler suggests Verano will be a server processor with rather high power consumption despite having considerably fewer cores than EPYC Venice.
ReportedInsufficientSource: Tom's Hardware inference2 sources— create a free account to open themView cited source - [15]
"Note that AMD has not announced how many Verano SKUs it plans to offer, so consider our thoughts speculation for now."
ReportedInsufficientSource: Tom's Hardware (Anton Shilov)2 sources— create a free account to open themView cited source
Sources
1 independent publisher whose own reporting we read for this story.
- tomshardware.comAMD's EPYC Verano AI host CPU will reportedly use a special SB1 socket
1 article · October 8, 2026
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