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Dell PowerEdge XE9640


The Dell PowerEdge XE9640 is a 2U dual-socket GPU server and Dell's first liquid-cooled 4-way GPU platform, built as a dense building block for AI, ML/DL and HPC clusters. It takes four NVIDIA H100 700W SXM GPUs linked by NVLink or four Intel Data Center GPU Max 1550 600W OAM GPUs linked by XeLink, with two 4th or 5th Gen Intel Xeon Scalable processors with up to 64 cores each. NVIDIA builds support up to 32 DDR5 RDIMMs for up to 2TB and Intel GPU builds up to 16 DIMMs for 1TB, at up to 5600 MT/s. Storage is up to 4x 2.5" NVMe SSDs with BOSS-N1 boot, plus up to four PCIe Gen5 x16 slots. CPUs and GPUs are direct liquid cooled, with four Titanium 2800W PSUs and iDRAC9. Fully configurable.

Looking to compare generations? See the Gen 15 Dell PowerEdge R750xa, or compare Gen 16 models: Dell PowerEdge XE8640 and Dell PowerEdge XE9680.

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  • Form Factor: 2U Rack
  • Processors: Up to 2x 4th/5th Gen Intel Xeon Scalable (up to 64 cores)
  • Memory: Up to 32x DDR5 RDIMM slots, up to 2TB
  • Memory Speed: Up to 5600 MT/s
  • Storage: Up to 4x 2.5" NVMe SSDs
  • Expansion: Up to 4x PCIe Gen5 x16 slots
  • GPU Support: 4x NVIDIA H100 SXM (NVLink) or 4x Intel Max 1550 OAM (XeLink)
  • Networking: Optional 2x 1GbE LOM, 1x OCP 3.0 (x8)
  • Management: iDRAC9
  • Cooling: Direct liquid cooling (CPU + GPU)
  • Power: 4x Titanium 2800W PSUs

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Dell PowerEdge XE9640 vs XE8640: Specs & Key Differences

Feature PowerEdge XE9640 PowerEdge XE8640
Processors Up to 2x 4th/5th Gen Intel Xeon Scalable (up to 64 cores) Up to 2x 4th/5th Gen Intel Xeon Scalable (up to 64 cores)
Memory Up to 32x DDR5 RDIMM slots, up to 2TB 32x DDR5 RDIMM slots, up to 4TB
Memory Speed Up to 5600 MT/s Up to 5600 MT/s
Storage Up to 4x 2.5" NVMe SSDs Up to 8x 2.5" SAS/SATA/NVMe or 8x E3.S NVMe SSDs
PCIe Up to 4x PCIe Gen5 x16 Up to 4x PCIe Gen5 x16
GPU Support 4x NVIDIA H100 SXM or 4x Intel Max 1550 OAM 4x NVIDIA H100 SXM5 700W with NVLink
Networking Optional 2x 1GbE LOM, 1x OCP 3.0 (x8) 2x 1GbE LOM, 1x OCP 3.0 (x8)
Management iDRAC9 iDRAC9
Cooling Direct liquid cooling (CPU + GPU) Air (CPU) + liquid-assisted air (GPU)
Power 4x Titanium 2800W 4x Titanium 2800W or 3200W (3+1)
Form Factor 2U Rack 4U Rack

Frequently Asked Questions

Either four NVIDIA H100 SXM GPUs at 700W (80GB or 94GB), fully interconnected with NVLink, or four Intel Data Center GPU Max 1550 OAM GPUs at 600W, fully interconnected with XeLink.

NVIDIA GPU builds take 8, 16 or 32 DDR5 RDIMMs for up to 2TB; Intel GPU builds use 16 of the 32 slots for up to 1TB. Speeds reach 5600 MT/s with one DIMM per channel and 4400 MT/s with two.

Up to four 2.5-inch NVMe SSDs at the front (61.44TB max) and BOSS-N1 with two M.2 SSDs for boot. There is no PERC RAID controller; software RAID S160 is supported. Please specify your capacity needs when you submit your quote configuration.

Yes. Its processors and GPUs are direct liquid cooled at all times through an internal manifold, so it needs a rack liquid cooling setup such as Dell's 42U or 48U XE9640 rack manifolds. Four sets of hot-swap fans cool the remaining components.

Both run four NVIDIA H100 SXM GPUs on 4th or 5th Gen Xeon. The XE9640 packs them into 2U with full direct liquid cooling and adds an Intel Max 1550 GPU option, while the 4U XE8640 uses liquid-assisted air cooling with no facility water and supports up to 4TB memory and 8 drives.