Density optimized AI acceleration
Deliver real-time insights with Dell’s first liquid-cooled 4-way GPU platform in the XE9640 2U server, designed to drive the latest cutting-edge AI, Machine Learning and Deep Learning Neural Network applications.
- Combined with high core count of up to 56 cores in the new generation of Intel® Xeon® processors and the most GPU memory and bandwidth available today to break through the bounds of today’s and tomorrow’s AI computing.
- The offer is either four NVIDIA H100 700W SXM GPUs fully interconnected with NVlink, or four Intel Data Center Max GPU series 1550 600W OAM GPUs, fully interconnected with XeLink.
- Ideal 2U form factor building block for dense Supercomputer and HPC acceleration workloads and applications
- Supports Rack Liquid Cooling Infrastructure: Cool IT with 42U XE9640 rack manifold and 48U XE9640 rack manifold
Accelerate your performance
Rapidly develop, train and deploy large machine learning models. Accelerate complex HPC applications and drive a wide range of complex processing needs. XE9640 delivers outstanding performance using Intel® CPUs and new Intel® Data Center Max Series GPUs.
- Break through boundaries with two 4th generation Intel® Xeon® processors and four Intel® Max Series 1550 GPUs interconnected with Xe Link or four NVIDIA® H100 GPUs interconnected with NVLink
- Increase performance and speed with liquid-cooled CPUs and GPUs
- Be more efficient with a slim 2U form factor and rack installation for high-density deployments
Deploy and enable HPC applications and AI workloads across your business.
- Efficiently cool data center and HPC cluster operations with Dell Smart Cooling technology with Direct Liquid Cooling on all CPUs and GPUs
- Scale effectively with up to 32 DDR5 memory DIMM slots, up to four drives and up to 4 PCIe Gen5 expansion slots
- Deploy AI operations with confidence thanks to built-in security features including Secured Component Verification and Silicon Root of Trust
Accelerated I/O Throughput
Deploy latest generation technologies including DDR5, NVLink, PCIe Gen 5.0, and NVMe SSDs to push the boundaries of data flow and computing possibilities.
- Deploy latest generation technologies including DDR5, XeLink, NVLink, PCIe Gen 5.0, and NVMe SSDs to push the boundaries of data flow and computing possibilities.
- Up to four PCIe Gen 5 slots and up to 8 drives enable optimal expansion for high-performance real-time AI operations.
- Direct liquid-cooled Processors and GPUs enable efficient cooling for highest performance, efficient power-utilization and lower TCO
- Dell Multi-vector cooling manages components to operate optimally
Cyber Resilient Architecture for Zero Trust IT environment & operations
Security is integrated into every phase of the PowerEdge lifecycle, including protected supply chain and factory-to-site integrity assurance. Silicon-based root of trust anchors end-to-end boot resilience while Multi-Factor Authentication (MFA) and role-based access controls ensure trusted operations.
Chassis Options
Inside the Dell PowerEdge XE9640 Rack Server the top 1U is split up by 2x 1U trays. One tray holds the system board with DIMMS and CPU while the second tray holds the drives and fans. The bottom of the system is where the differences come in between the servers. The Intel and Nividia layouts have different Power Distribution Boards. While the Nvidia Configuration also has a PCIe switchboard (PSB) that holds two cold plates and provides more communication between all the PCIe components in the server.
Top Front Tray with Drives and Fans 
Top Back Tray with CPUs and DIMMS 
Bottom Section Diagram of GPU Layouts. 
Heatsink & Fans
The XE9640 has CPUs and GPUs (and a few other minor components) directly liquid cooled 100% of the time while other components like DDR5 DIMMs, PCIe cards, PSUs and storage are air-cooled with a max inlet air temperature of 35C.
Liquid cooling components in a data center include facility water, cooling distribution units (CDU) and rack manifolds (looks like a PDU but for water). The XE9640 has a higher flow-rate requirement than the rest of PowerEdge 16G platforms. As such, the rack manifold is not shared with the other platforms.
Memory
The memory is a bit different than most servers. Each of the two chassis options has different DIMM supports. The Intel GPU XE9640 Rack server supports up to 16 DIMM slots (with 8 DIMMs per processor). The Max memory is 1TB RDIMM. While the Nvidia GPU Chassis can support 8 DIMMS, 16 DIMMs, and 32 DIMMs with a max RDIMM of 2TB.
Intel GPU Configuration
| DIMM Speed
(MT/s) | DIMM Type | DIMM Capacity
(GB) | Ranks per DIMM | Data Width | DIMM Volts (V) |
| 4800 | RDIMM | 64 | 2 | x4 | 1.1 |
Nvidia GPU Configuration
| DIMM Speed
(MT/s) | DIMM Type | DIMM Capacity
(GB) | Ranks per DIMM | Data Width | DIMM Volts (V) |
| 4800 | RDIMM | 16 | 1 | x8 | 1.1 |
| 4800 | RDIMM | 32 | 2 | x8 | 1.1 |
| 4800 | RDIMM | 64 | 2 | x4 | 1.1 |
Expansion Slots
The XE9640 supports up to 4 PCIe slots (4 x16 Gen5) when one of the two risers configs is installed. Both processors must be installed for all 4 PCIe slots to be enabled. Each Chassis has its own Riser Config. You are not able to install the Nvidia Riser config in the Intel XE9640 Rack Server and vice versa.
| Config No. |
Riser configuration |
No. of Processors |
PERC type supported |
Rear storage possible |
|
Config 2 Intel |
R1A+R4A |
2 |
NA |
No |
|
Config 3 Nvidia |
R1B+R4B |
2 |
NA |
No |
GPU Support
The XE9640 supports two types of GPUs. The First is an NVIDIA H100 SXM 700W NVLINK GPU and the second id an Intel Data Center Max GPU Series 1550 OAM 600W Xelink GPU are the only supported SXM GPUs.
The GPUs have special Liquid Cooling, please refer to the installation manual for more details. The GPUS sits on the bottom tray of this 2U sysem. The top tray holds the CPUs and drives.
Networking
Like most Gen 16 Dell Severs this rack server has an optional 2x 1GbE LOM and an OCP 3.0 slots. The OCP slot can support up to 4 Ports with the max port speed being 25GbE.
Storage Controllers
The XE9640 only has 4 drives so there is only the PERC 12 Internal SW RAID S160 controller for supporting the drives. You can also install the optional BOSS-N1 Boot Device which holds up to 2x M.2 NVMe SSD Drives.
Boot Optimised Storage System (BOSS) Features
| BOSS card | Drive Size | RAID levels | Stripe size | Virtual disk cache function | Max number of virtual disks | Max number of drives supported | Drive types | PCIe support | Disk cache policy | Support for NonRAID disks | Crypto graphic digital signature to verify firmware payload | Hot Plug |
| BOSS-N1 Monolithic | M.2 devices are readintensive with 480 GB capacity | RAID1 and RAID0 | Supports default 64K stripe size only | None | 1 | 2 | M.2 NVMe SSDs | Gen3 | Drive default | No | Yes | Yes |
Power & Dimensions
Power Supply Units (PSU)
Up to 4x 2800W Titanium 200-240 VAC or 240 VDC, hot-swap redundant
Note: Mixed vendor PSUs in the same chassis are not recommended.
Dimensions & Weight:
- Width: 482 mm (18.97 inches)
- Height: 86.8 mm (3.41 inches)
- Length: 926.5 mm (36.47 inches) with bezel
- Length: 912.8 mm (35.93 inches) without bezel
- Weight: 43.2 kg (95.23 pounds) for XE9640 Intel GPU supported systems
- Weight:46.3 kg (102.07 pounds) for XE9640 NVIDIA GPU supported systems
