Dell PowerEdge XE9785
A 2-socket, 10U air-cooled rack server pairing two 5th Generation AMD EPYC 9005 Series processors (up to 192 cores each) with eight NVLink-connected NVIDIA HGX B300 GPUs, or eight AMD Instinct MI355X GPUs over AMD Infinity Fabric, for large-scale generative-AI training.
Memory
- Slots
- 24 × DDR5 RDIMM (12 per socket)
- Max
- 6 TB
- Speed
- Up to 6400 MT/s
- Type
- Registered ECC DDR5 RDIMM only; unbuffered DIMMs not supported
Storage
- Front bays
- Up to 16 × E3.S Gen5 NVMe direct SSDs, or up to 10 × U.2 Gen5 NVMe (not available at November 2025 launch)
- Controller
- Direct-attach PCIe SSDs only (Software RAID S160)
Graphics
- Options
- 8 × AMD Instinct MI355X 288 GB 1400 W OAM with AMD Infinity Fabric connectivity, or 8 × NVIDIA HGX B300 NVL8 270 GB 1100 W SXM6, fully interconnected via NVIDIA NVLink
Expansion
- PCIe (MI355X config)
- Up to 12 × 75 W Gen5 x16 FHHL slots
- PCIe (B300 config)
- Up to 4 × 150 W Gen5 x16 FHHL slots
- OSFP
- 8 × OSFP with B300 GPU configuration
- Networking
- 1 × OCP, plus OCP x8 Mezz 3.0
Networking
- Embedded
- 2 × dedicated iDRAC RJ45 ports
- Front I/O
- Up to 2 × 10/100/1000 Mbps NIC ports plus optional OCP 3.0 card
Power
- Supplies
- 12 × AC Titanium hot-swap PSUs (system supports 6+6 full redundant and A/B grid redundant)
- Cooling
- 15 standard hot-swap GPU fans (HPR Gold) plus 5 standard cold-swap CPU fans; air cooling, N+1 fan redundancy
Ports
- Front
- 1 × USB 2.0, 1 × iDRAC Direct (Micro-AB USB), 1 × VGA
- Rear
- 1 × USB 2.0, 1 × iDRAC Direct Ethernet port, 1 × USB 3.0, 1 × VGA
- Internal
- 1 × USB 3.1 Type-A
- Video
- Integrated Matrox G200 controller, 16 MB frame buffer; 1 × Mini-DisplayPort on left control panel
Physical
- Dimensions
- 439.5 mm × 448.0 mm × 1023 mm (H×W×D, without bezel); 1044.7 mm deep with bezel
- Weight
- 163.65-172.3 kg (360.79-379.86 lb) depending on GPU configuration
- Form factor
- 10U rack server
Management
- Embedded
- iDRAC10, iDRAC Direct, iDRAC RESTful with Redfish, iDRAC Service Manual
- Software
- CloudIQ for PowerEdge, OpenManage Enterprise, OpenManage Power Manager/Service/Update Manager plug-ins
- Security
- AMD SEV, AMD SME, cryptographically signed firmware, Silicon Root of Trust, Secure Boot, Secure Erase, Secured Component Verification, System Lockdown (requires iDRAC10 Enterprise/Datacenter), soldered-down TPM on Mezzanine DC-SCM, chassis intrusion detection
Operating systems
- Supported
- Canonical Ubuntu Server LTS; Red Hat Enterprise Linux (not available at initial launch)
Processors
- AMD EPYC 9965
- AMD EPYC 9825
- AMD EPYC 9845
- AMD EPYC 9755
- AMD EPYC 9655
- AMD EPYC 9575F
- AMD EPYC 9475F
- AMD EPYC 9455