Lenovo ThinkSystem SR685a V3
Lenovo's 8U air-cooled AI server (machine type 7DHC) pairing two AMD EPYC 9005 "Turin" or 9004 "Genoa" processors with a choice of an integrated 8-GPU board: AMD MI300X, NVIDIA HGX H100 or NVIDIA HGX H200. Up to 3 TB of DDR5, up to 16 x 2.5-inch PCIe 5.0 NVMe bays, and up to 10 PCIe 5.0 x16 slots for GPU-Direct networking. Built for large-scale generative-AI training and inference.
Memory
- Slots
- 24 DIMM (12 per processor; 12 channels per CPU, 1 DIMM per channel)
- Speed
- Up to 6400 MHz with 5th Gen EPYC (Turin); up to 4800 MHz with 4th Gen EPYC (Genoa)
- Max
- 3 TB using 24 x 128 GB RDIMMs/3DS RDIMMs and two processors
- Protection
- ECC, SDDC, Patrol/Demand Scrubbing, Bounded Fault, DRAM Address Command Parity with Replay, DRAM Uncorrected ECC Error Retry, On-die ECC, ECC Error Check and Scrub (ECS), Post Package Repair
- Persistent memory
- Not supported
Storage
- Front bays
- Up to 16 x 2.5" hot-swap drive bays on two 8-bay AnyBay-form backplanes (NVMe only despite the AnyBay name), PCIe 5.0 x4 per drive
- Boot
- 1 or 2 M.2 NVMe drives (2242/2260/2280/22110) in a horizontally mounted M.2 adapter between the processors; RAID-0/RAID-1 via onboard Marvell 88NR2241 controller
- Capacity
- Up to 245.76 TB using 16 x 15.36 TB 2.5" NVMe SSDs
- Controller
- Onboard NVMe (non-RAID) for the 2.5" bays; Marvell RAID on the M.2 adapter
Graphics
- GPU board (choice of one)
- ThinkSystem AMD MI300X 192GB 750W 8-GPU Board (C1HK); ThinkSystem NVIDIA HGX H100 80GB 700W 8-GPU Board (C1HL); ThinkSystem NVIDIA HGX H200 141GB 700W 8-GPU Board (C1HM)
- AMD MI300X
- OAM form factor, 192 GB HBM3, 5.3 TB/s bandwidth, 750 W TGP, 8 GPU partitions, Infinity Fabric 128 GB/s per link (896 GB/s total fully interconnected); FP32 163.4 TFLOPS, FP8 2,610/5,220 TFLOPS* (*with structural sparsity)
- NVIDIA H100
- SXM5 form factor, 80 GB HBM3, 3.35 TB/s bandwidth, 700 W, up to 7 MIGs @ 10 GB, NVLink 900 GB/s + PCIe Gen5 128 GB/s; FP32 67 TFLOPS, FP8 1,979/3,958 TFLOPS*
- NVIDIA H200
- SXM5 form factor, 141 GB HBM3e, 4.8 TB/s bandwidth, 700 W, up to 7 MIGs @ 16.5 GB, NVLink 900 GB/s + PCIe Gen5 128 GB/s; FP32 67 TFLOPS, FP8 1,979/3,958 TFLOPS*
Expansion
- Front slots
- 8 x PCIe 5.0 x16 FHHL slots with GPU Direct support
- Rear slots
- Choice of 2 x PCIe 5.0 x16 FHHL, or 1 x PCIe 5.0 x16 FHHL + 1 x OCP 3.0 slot (PCIe 5.0 x16)
- Total
- Up to 10 x PCIe 5.0 x16 slots
Networking
- User/Control Plane
- Supports a NVIDIA BlueField-3 2-port 200Gb adapter
- Management adapter
- Choice of OCP network adapter in the rear OCP slot; one port can be shared with XCC2 for Wake-on-LAN/NC-SI
- GPU fabric
- Up to 8 high-performance network adapters in the front PCIe slots, up to 400 Gb/s each, with GPU Direct support
- Management port
- 1 x RJ-45 1GbE, rear, dedicated to XCC2 remote management
Power
- PSU
- ThinkSystem 2600W 230V Titanium Hot-Swap Gen2 Power Supply v4 (4P57A72667); 80 PLUS Titanium; requires 220V AC supply
- Quantity/redundancy
- Up to 8 hot-swap power supplies, up to N+N redundancy
- Input current
- 230V AC: 13A; 200V AC: 13.2A; 240V DC: 11.9A (100V AC not supported)
- Cooling
- 5 x front dual-rotor fans (CPU/storage, N+1); 10 x rear dual-rotor fans (GPU subsystem, N+1); one fan per PSU; front-to-rear airflow; max airflow 1417 CFM (MI300X) / 1457 CFM (H100/H200)
Ports
- Front
- 1 x USB 3.2 Gen 1 (5 Gb/s), 1 x USB 2.0 (also XCC local management), 1 x VGA
- Rear
- 3 x USB 3.2 Gen 1 (5 Gb/s), 1 x VGA, 1 x RJ-45 1GbE XCC remote management
- Video note
- Front and rear VGA share one controller and cannot be used simultaneously; using the front port disables the rear port
Physical
- Form factor
- 8U rack
- Dimensions
- 447 mm W x 351 mm H x 924 mm D (17.6 x 13.8 x 36.3 in); 483 mm across front EIA flanges
- Weight
- Up to 109.4 kg (241 lb) with AMD MI300X GPUs; up to 104.4 kg (230 lb) with NVIDIA H100/H200
- Machine type
- 7DHC, 3-year (or 1-year, model-dependent) warranty
- Environment
- ASHRAE Class A2 for most configurations; some configurations also comply with Class A3/A4 and Class H1
Management
- BMC
- XClarity Controller 2 (XCC2), ASPEED AST2600-based BMC
- Local
- Integrated Diagnostics Panel with pull-out LCD display and status LEDs
- Software
- XClarity One, XClarity Integrator plugins, XClarity Energy Manager; optional XCC Platinum adds remote-control (KVM) functions
- Security
- Power-on and administrator passwords; Root of Trust module (TPM 2.0 + Platform Firmware Resiliency)
Operating systems
- Supported
- Ubuntu Server
Processors
- AMD EPYC 9455
- AMD EPYC 9475F
- AMD EPYC 9535
- AMD EPYC 9555
- AMD EPYC 9575F
- AMD EPYC 9655
- AMD EPYC 9745
- AMD EPYC 9454
- AMD EPYC 9474F
- AMD EPYC 9534
- AMD EPYC 9554
- AMD EPYC 9654