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Reference architectures for private AI

Hardware blueprints you can budget from — a B300 cluster, a GB300 NVL72 rack, an H200 inference pod and a starter stack. Each with a bill of materials, a diagram and indicative pricing. We tailor to your workload and screen every order for compliance.

B300 Training & Inference Cluster

4–16 nodes32–128 × B300800G fabricLiquid-cooled

The current platform for new clusters: eight-GPU HGX B300 servers on a non-blocking 800G fabric, with flash storage for datasets and checkpoints and direct liquid cooling at about 60 kW per rack. 288 GB per GPU and FP4 make it the choice for pre-training, fine-tuning of large models and high-throughput inference. Supplied through allocation to documented projects.

800G InfiniBand or Spectrum-Xnon-blocking leaf-spine, ConnectX-8HGX B300 · 18 × B300 288 GBHGX B300 · 28 × B300 288 GBHGX B300 · 38 × B300 288 GBHGX B300 · 48 × B300 288 GBAll-flash / parallel storagedatasets + checkpointsDirect liquid coolingCDU + manifolds, ~60 kW rack
ComponentSpecificationNotes
Compute4–16 × HGX B300 (8 × B300 288 GB each), OEM or DGX B300allocation to documented projects
Fabric800G InfiniBand (Quantum-X800) or Spectrum-X, ConnectX-8non-blocking leaf-spine
Storageall-flash for 32 GPUs; parallel file system from ~128 GPUsdatasets + fast checkpoints
Coolingdirect liquid cooling: CDUs, manifolds, facility water loop4 servers per rack, ~55–60 kW
Powerhigh-density PDUs, UPS~14.5 kW per server
Alternative4 × HGX H200 (32 GPUs), air-cooled at 20–35 kW per racklower entry cost, from ~$1.4M
from ~$2.5M  32 GPUs with fabric and storage; 128 GPUs about $10–15M

GB300 NVL72 Rack

1 rack72 × B300 + 36 GraceOne NVLink domain~132 kW, liquid-only

Rack-scale Blackwell Ultra: 72 B300 GPUs and 36 Grace CPUs joined by nine NVLink switch trays into a single 72-GPU domain with about 20 TB of HBM3e. Model-parallel work that would cross InfiniBand between eight-GPU servers stays on NVLink, which is what trillion-parameter training and high-concurrency serving of the largest reasoning models need. Racks scale out over 800G to each other and to storage. The site has to be built for it: about 132 kW per rack and liquid cooling designed in from the start.

GB300 NVL72 · one rack10 compute trays2 Grace + 4 B300 each9 NVLink switch traysone 72-GPU NVLink domain, 130 TB/s8 compute trays72 × B300 · 36 Grace in total800G scale-out fabricConnectX-8 to other racks + storageCoolant distribution unitdirect liquid cooling, ~132 kWPower: ~132 kW per rackup to 192 kW busway advised
ComponentSpecificationNotes
Compute18 compute trays: 72 × B300, 36 × Gracedelivered and accepted as one system
NVLink9 NVLink switch trays, 130 TB/sone domain across the rack
Scale-out800G InfiniBand or Spectrum-X, ConnectX-8rack-to-rack and storage
Coolingdirect liquid cooling, CDU per row or rackliquid-only
Power~132 kW per rack nominalup to 192 kW busway advised
Siteyour hall, or liquid-ready capacity with our Tier 1 partnerGPU cluster hosting
quoted per project  as a complete rack, with site readiness checked first

H200 Inference Pod

4 nodes8× H200 NVL400G fabricServes 70–180B models

The workhorse for serving large models privately: four PCIe GPU nodes on a 400G fabric with shared flash storage. The lower-cost entry for production inference: H200 NVL runs in standard air-cooled racks, and a project order moves faster than HGX allocation.

GPU node 12× H200 NVLGPU node 22× H200 NVLGPU node 32× H200 NVLGPU node 42× H200 NVL400G fabricQSFP-DD / IBAI storageNetApp / PowerScaleHead / serviceR660 class
ComponentSpecificationNotes
GPU nodes4× server, 2× H200 NVL 141 GB eachDell R760xa / HPE DL380a class
Fabric400G QSFP-DD or InfiniBandcut-length schedule included
StorageNetApp AFF / Dell PowerScalesized to model + cache
Head/serviceR660 / DL360 classscheduling, login, monitoring
Power/coolingintelligent PDUs, rear-door HXper-rack budget calculated
from ~$350,000  all-in, ex-works hub; GPU pricing moves with allocation

Private AI Starter Stack

Desk to rackDGX Spark + 1 nodeRAG-ready

The smallest credible private-AI footprint: a DGX Spark for development, one H200 NVL inference node for launch, and an NVMe-heavy node for RAG and vector search. The same software stack scales to the pod and the B300 cluster above when you grow.

DGX Sparkdev / prototypingInference node2× H200 NVLRAG / vectorNVMe CPU node
ComponentSpecificationNotes
DevelopmentNVIDIA DGX Spark128 GB unified, desktop
Inference1× node, 2× H200 NVL70B-class production serving
RAG / vectorNVMe CPU nodeembeddings, retrieval, cache
Networking25/100G switchingCatalyst / Nexus
from ~$95,000  ex-works hub; DGX Spark from ~$4,000 standalone

Running AI on this infrastructure? Haink also builds the LLM & ML software that runs on it — model, pipeline and GPUs under one contract.

Need this sized to your models?

Tell us the workload, where it should run and when — we come back with the architecture, a costed bill of materials, hosting options and a realistic timeline.

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