Lenovo ThinkSystem SC777 V4 Neptune
Fanless, fully warm-water-cooled GB200 NVL4 node with four Blackwell GPUs and two Grace CPUs, mounted eight to a 13U N1380 enclosure. For HPC and AI training sites with facility water.
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Facts
Source per value- Maker The OEM, ODM or system builder that sells the server model. Corporate names follow the vendor’s own pages.
- Lenovo 1
- GPU vendor Maker of the accelerators named in the GPU model field: NVIDIA, AMD or Intel. Blank when the vendor page names no accelerator.
- NVIDIA 1
- GPU or accelerator Accelerators the vendor page names for this model. A model that supports several options lists the option that was read, marked as one supported option.
- NVIDIA GB200 NVL4 (4 × B200 per node) 1
- GPUs per server GPUs Installed count or supported maximum per server, as the qualifier in the source says. Rack-scale systems show the GPUs in the whole rack (72 for an NVL72). Blank when the page gives no count.
- 4 1
- Chassis height U Rack height of the server as the vendor states it. Open Rack Units (OU) are not the same as EIA U and sit in the form factor field instead.
- Not published
- Form factor Configuration-specific chassis or rack description where the vendor splits it by cooling or rack standard.
- Node in 13U N1380 Neptune enclosure (up to 8 nodes) 1
- Cooling type Air, liquid, or air or liquid by configuration, read from the vendor’s cooling statement. Blank when the page does not state cooling.
- Liquid 1
- Cooling (vendor wording) The vendor’s cooling statement with configuration qualifiers kept.
- 100% direct warm-water cooling, no system fans; inlet water up to 45°C 1
- CPU support Processor families or installed processors the named model supports.
- 2 × NVIDIA Grace, 72 Arm Neoverse V2 cores each 1
- CPU sockets sockets Processors per server.
- Not published
- CPUs per rack CPUs Total CPUs in a rack-scale configuration.
- Not published
- Memory per GPU GB Memory on each accelerator in the cited configuration.
- 186 1
- Total GPU memory GB Vendor-stated total accelerator memory per system.
- 744 1
- Max system memory TB Vendor-stated maximum host RAM, not GPU memory.
- Not published
- Memory slots DIMMs Host memory DIMM slots.
- Not published
- GPU TDP W Thermal design power per GPU, not measured server draw.
- 1,200 1
- System power kW Maximum power the vendor states for one system, as printed on its own page.
- Not published
- Rack power kW Power the vendor states for a full rack-scale system.
- Not published
- Power supplies PSU ratings, quantity and redundancy where published. Rating, not draw.
- Not published
- Rack power delivery Power-shelf rating in rack-scale and rack-sled systems. Delivery capacity, not rack demand.
- N1380 enclosure: up to 4 × 15 kW water-cooled power conversion stations (N+1); 18/36/54 kW DC with 2/3/4 PCS 1
- GPU interconnect GPU fabric and published link bandwidth.
- NVLink 1.8 TB/s GPU full mesh; NVLink-C2C 300 GB/s CPU-GPU 1
- Networking Published ports, adapters and speeds.
- 2 × 25GbE SFP28 onboard; up to 6 front PCIe 5.0 x16 slots (ConnectX-7/8 or 2 × 800Gb OSFP) 1
- Source date Publication date printed on the cited page, where the vendor prints one.
- 2026-07-15 1
- Warranty Base warranty or service statement the vendor publishes.
- Not published
- Operating temperature °C Supported ambient range with the vendor’s caveats.
- Not published
- Maker headquarters Headquarters or principal corporate office of the maker, not a factory location.
- Beijing, China; Morrisville, United States 2
Sources
- lenovopress.lenovo.com accessed 2026-11-11
- investor.lenovo.com accessed 2026-11-11
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