The Dell PowerEdge XE9640 is a high-density, 2U liquid-cooled server specifically engineered to deliver extreme AI acceleration and HPC performance. It is characterized by its compact form factor combined with a powerful 4-way GPU/OAM platform featuring seamless, high-speed interconnectivity.

Full Technical Specifications

Component	Specification
Form Factor	2U Rack Server (optimized for density)
Cooling	Direct Liquid Cooling (DLC) for CPUs and GPUs (Internal Manifold)
Processor	Dual 4th or 5th Generation Intel® Xeon® Scalable Processors (up to 64 cores per CPU)
Accelerators (GPU/OAM)	4x HGX/OAM Accelerators (fully interconnected): • NVIDIA H100 SXM (700W) with NVLink • Intel Data Center Max 1550 OAM (600W) with XeLink
Memory	Up to 32 DDR5 DIMM slots (NVIDIA config), max 2 TB RDIMM, speeds up to 5600 MT/s
PCIe Expansion	Up to 4 PCIe Gen 5 slots (4 x16) for networking and I/O
Storage (Front Bays)	Up to 4 x 2.5-inch NVMe SSDs, max 61.44 TB (Future option for 8 x E3.S)
Boot Storage	Boot Optimized Storage Subsystem (NVMe BOSS-N1) with HWRAID 1 (2 x M.2 SSDs)
Power Supplies	2800W Titanium (Hot-swap redundant)
Management	iDRAC9, iDRAC Direct, OpenManage Enterprise (OME)
Workloads	AI/ML/DL Training, Large Language Models (LLM), HPC Supercomputing

Description

The Dell PowerEdge XE9640 is a breakthrough in data center density, being Dell's first 2U direct liquid-cooled (DLC) server built for extreme AI and HPC. The integration of DLC directly onto the CPUs and the 4 high-wattage HGX/OAM accelerators (NVIDIA H100 or Intel Max 1550) allows it to deliver superior computational power and energy efficiency in a compact form factor.

This dense server acts as an ideal building block for large Supercomputing and AI clusters, supporting memory-coherent workloads like Large Language Model (LLM) training thanks to the high-speed NVLink or XeLink interconnects. The XE9640 maximizes GPU capacity per rack, enabling organizations to achieve higher performance with lower Total Cost of Ownership (TCO) compared to larger, air-cooled solutions, perfectly balancing power, cooling, and density.