Lenovo ThinkSystem SC777 V4
A direct water-cooled AI training/inference node built around the NVIDIA GB200 NVL4 superchip: two NVIDIA Grace CPUs and four NVIDIA Blackwell B200 GPUs per tray, housed in the same ThinkSystem N1380 Neptune enclosure as the SC750 V4.
Memory
- CPU memory
- 960 GB LPDDR5X ECC (480 GB/CPU), 4266 MT/s, fixed 8x 128GB modules
- Protection
- ECC SEC-DED with parity, scrubbing, poisoning and page off-lining
Storage
- Drive bays
- Up to 10 x E3.S 1T NVMe SSDs (5 bays), non-hot-swap
- Config
- 8 drives for data storage + 2 for OS boot (requires PCIe switch board, feature C51T)
- Max capacity
- 153.6 TB using 10 x 15.36 TB E3.S NVMe SSDs
- Controller
- Onboard NVMe; RAID via operating system
Graphics
- GPUs
- 4 x NVIDIA B200, 186 GB HBM3e each (744 GB total), 8 TB/s memory bandwidth per GPU (32 TB/s total)
- Interconnect
- NVLink between GPUs 1.8 TB/s full mesh; NVLink to CPUs 450 GB/s per GPU; PCIe Gen6 x16 (256 GB/s) per GPU
- Compute
- FP64 160 TFLOPS, FP32 320 TFLOPS, FP8 Tensor 40,000 TFLOPS (with sparsity) per NVL4 system
- TGP
- 1200W per GPU; 5480W total board power
Expansion
- Slots
- Up to 6 x PCIe 5.0 x16 low-profile slots
- HPC and AI for Science config
- Up to 6x ConnectX-7 or 3x ConnectX-8 network adapters, traded off against 2-8x E3.S data drives
- AI Training config
- 4x ConnectX-8 I/O modules for GPUDirect (PCIe Gen6 x16 to GPUs, Gen5 x16 to CPUs, 800Gb OSFP each), plus up to 2x ConnectX-7 or 1x ConnectX-8
Networking
- Onboard
- 2 x 25GbE SFP28 (NVIDIA ConnectX-6 Lx)
Power
- Enclosure PSU
- Up to 4 x water-cooled hot-swap power conversion stations (PCS), 80 PLUS Titanium, N+1
- Input
- 380-480 Vac, 3-phase WYE
Ports
- Front/rear
- External diagnostics port, VGA, USB-C (DisplayPort + 5 Gb/s data), 2 x USB 3 (5 Gb/s), RJ-45 1GbE XCC management
Physical
- Tray dimensions
- 546 x 53 x 760 mm (21.5 x 2.1 x 29.9 in), 799 mm incl. water connections
- Tray weight
- 36.5 kg (80.5 lb)
- Enclosure (N1380)
- 540 x 572 x 1302 mm (21.3 x 22.5 x 51.2 in), 13U, up to 8 SC777 V4 trays
- Enclosure weight
- Empty 94 kg (208 lb); fully configured with 4 PCS and 8 trays 470 kg (1036 lb)
Management
- BMC
- XClarity Controller 3 (XCC3), ASPEED AST2600; optional XCC3 Premier
- Enclosure
- System Management Module (SMM3) in N1380 for power, cooling and leak monitoring
Operating systems
- Supported & Certified
- Red Hat Enterprise Linux 9.6, Red Hat Enterprise Linux 10.0, Ubuntu 24.04 LTS 64-bit
Processors
- NVIDIA Grace CPU