Lenovo ThinkSystem SR780a V3
Lenovo's 5U direct-water-cooled AI server (machine type 7DJ5) with two 5th Gen Intel Xeon Scalable "Emerald Rapids" processors and a choice of integrated 8-GPU liquid-cooled board: NVIDIA HGX H100, HGX H200 or HGX B200. 6th Gen Lenovo Neptune water cooling removes up to 75% of generated heat via 4 water loops. Up to 4 TB of DDR5, up to 12 x 2.5-inch PCIe 5.0 NVMe bays, and up to 11 PCIe 5.0 slots. Built for dense, high-performance generative-AI training and inference.
Memory
- Slots
- 32 DIMM (16 per processor; 8 channels per CPU, 2 DIMMs per channel)
- Speed
- 1 DPC up to 5600 MHz; 2 DPC up to 4400 MHz
- Max
- 4 TB using 32 x 128 GB RDIMMs and two processors
- Protection
- ECC, SDDC (x4-based DIMMs), ADDDC (x4-based DIMMs except 9x4 RDIMMs, requires Platinum/Gold processors), memory mirroring
- Persistent memory
- Not supported
Storage
- Front bays
- 8 x 2.5" hot-swap PCIe 5.0 NVMe drive bays
- Rear bays
- Optional 4 x 2.5" hot-swap PCIe 5.0 NVMe drive bays, replacing one rear PCIe slot
- Boot
- 2 internal M.2 drives with optional Intel VROC NVMe RAID
- Capacity
- Up to 174.08 TB using 8 x 15.36 TB front NVMe + 4 x 12.8 TB rear NVMe drives
- Controller
- Onboard NVMe (non-RAID)
Graphics
- GPU board (choice of one)
- ThinkSystem NVIDIA HGX H100 80GB 700W 8-GPU Liquid Cooled Board (C4EJ); ThinkSystem NVIDIA HGX H200 141GB 700W 8-GPU Liquid Cooled Board (C2ER); ThinkSystem NVIDIA HGX B200 1000W 180GB 8-GPU Liquid-Cooled Board (C696)
- NVIDIA H100
- SXM5, 80 GB HBM3, 3.35 TB/s bandwidth, 700 W, FP32 67 TFLOPS, FP8 Tensor 1,979/3,958 TFLOPS*, NVLink 900 GB/s + PCIe Gen5 128 GB/s (*with structural sparsity)
- NVIDIA H200
- SXM5, 141 GB HBM3e, 4.8 TB/s bandwidth, 700 W, FP32 67 TFLOPS, FP8 Tensor 1,979/3,958 TFLOPS*, NVLink 900 GB/s + PCIe Gen5 128 GB/s
- NVIDIA B200
- SXM6, 180 GB HBM3e, 8 TB/s bandwidth, 1000 W, FP32 80 TFLOPS, FP8 Tensor 4.5/9 PFLOPS*, BF16/FP16 Tensor 2.25/4.5 PFLOPS*
Expansion
- Front slots
- 8 x PCIe 5.0 x16 FHHL slots with GPU Direct support
- Rear slots
- Up to 3 x PCIe 5.0 FHHL slots (two x16 slots, or two x8 + one x16); one rear x16 slot can be replaced with the 4-bay rear 2.5" drive cage
- Total
- Up to 11 x PCIe 5.0 x16 slots
Networking
- User/Control Plane
- NVIDIA BlueField-3 2-port 200Gb adapter
- Management adapter
- Mellanox ConnectX-6 Lx 2-port 10/25GbE adapter
- 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
- 2600 W 230V AC Titanium hot-swap power supplies; requires 220V AC supply
- Quantity/redundancy
- 8 hot-swap power supplies, up to N+N redundancy
- Cooling
- 6th Gen Lenovo Neptune direct water cooling for CPUs, GPUs and NVLink switches via 4 water loops, removing up to 75% of generated heat; 6 internal dual-rotor fans (compute/storage, N+1) and 5 rear dual-rotor fans (lower components/front PCIe slots/PCIe switches, N+1); one fan per PSU; front-to-rear airflow
Ports
- Front
- 1 x USB 3.2 Gen 1 (5 Gb/s), 1 x USB 2.0 (also XCC local management), 1 x Mini DisplayPort video
- Rear
- 2 x USB 3.2 Gen 1 (5 Gb/s), 1 x VGA, 1 x RJ-45 1GbE XCC remote management
- Video note
- Front Mini DisplayPort and rear VGA can be used simultaneously (unlike the SR685a V3); max resolution 1920x1200 @ 60Hz on both
Physical
- Form factor
- 5U rack
- Dimensions
- 447 mm W x 219 mm H x 942 mm D (17.6 x 8.6 x 37.1 in); 483 mm across front EIA flanges
- Weight
- Up to 92 kg (202 lb) with NVIDIA B200 GPUs; 90 kg (199 lb) with H100/H200
- Machine type
- 7DJ5, 3-year (or 1-year, model-dependent) warranty
- Cooling type
- Direct liquid (water) cooling for CPUs/GPUs/NVLink switches; air cooling for remaining components
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, Red Hat Enterprise Linux, VMware ESXi
Processors
- Intel Xeon Platinum 8558P
- Intel Xeon Platinum 8562Y+
- Intel Xeon Platinum 8568Y+
- Intel Xeon Platinum 8570
- Intel Xeon Platinum 8592+