- HPE unveils a rack-scale system containing 81,920 CPU cores
- AMD Venice processors power HPE’s next-generation Cray infrastructure
- One 42U rack delivers unprecedented levels of computing density
During its recent HPE Discover 2026 event, the company unveiled new Cray GX5000 hardware with next-generation AMD EPYC Venice processors, with specifications that push server density well beyond current implementations.
The system combines multiple compute blades, liquid cooling infrastructure, network hardware and memory resources in a single 42U rack configuration.
HPE unveiled a Cray GX5000 configuration designed to deliver up to 81,920 CPU cores in one rack.
Dense compute architecture pushes rack capacity higher
The HPE Cray GX5000 platform follows the AMD EPYC 9965, a 192-core processor that represented one of AMD’s server CPUs with the highest number of cores before Venice arrived.
While the EPYC 9965 increased density at the processor level, the Venice-based system takes a broader approach by combining multiple CPUs, memory resources and cooling infrastructure inside a single rack.
At the center of the system is the HPE Cray GX250a compute blade, which houses eight AMD EPYC Venice processors.
The compute blade incorporates power supply, liquid cooling channels, memory subsystems, storage devices and networking components in a compact design.
HPE stated that a fully populated rack can deliver 81,920 CPU cores, although exact processor configurations were not disclosed.
Based on the rack specifications, the system reportedly uses 80 multi-node motherboards and can support as much as 1.28 PB of RAM.
Each Venice processor connects to 16 memory channels, creating significant memory bandwidth for large-scale computing workloads.
The memory modules themselves are liquid cooled and appear to use standard DIMM form factors.
Photographs from the event showed local Samsung E1.S EDSSF SSDs mounted over multiple processor cold plates.
HPE representatives indicated that these drives act as high-speed scratch storage for temporary data processing tasks.
The installed DRAM modules, storage devices and node IDs suggest that the hardware shown was operational rather than a non-functional demonstration unit.
This distinction is significant because previous Venice demonstrations seemed closer to prototype systems than production-ready implementations.
Venice CPUs and networks define the platform
The rack includes Slingshot 400 networking hardware, with HPE indicating future compatibility with Slingshot 800 technology.
Network modules are mounted in side pods that are connected to processors through dedicated interfaces designed for high-bandwidth communications.
The front-facing network arrangement also simplifies cable management by changing how optical connections are routed through the rack.
HPE also displayed a coolant distribution unit capable of handling 1.6 MW of cooling capacity for large installations.
Such cooling requirements reflect the growing power densities associated with modern high-performance computing infrastructure and increasingly complex CPU designs.
AI tools, scientific simulations, engineering analysis, and large LLM implementations are among workloads that require this level of computational density.
The company did not reveal detailed specifications for AMD’s unannounced Venice processors, although available numbers suggest unusually high core counts.
Calculations based on the stated rack capacity of 81,920 cores imply that processor densities exceed current EPYC generations by a significant margin.
Although AMD has not released the specifications or performance figures for the Venice, the expected core density of the HPE system has led to speculation that the processor could become one of the most powerful x86 CPUs produced.
A lot could change before the official launch, but the Cray GX5000 platform indicates that AMD and HPE are pursuing higher compute density within the same rack footprint.
Via ServeTheHome
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