NOKIA
Data Center Fabric
GPU Compute Fabric BOM Calculator
2-Tier Backend Fabric · Nokia 7220 IXR-H5-64O · 8 GPUs/Server · 32 Servers/SU
NIC & GPU Configuration
Per-GPU NIC / Fabric Plane Mode
NIC Vendor (within mode)
GPU Platform
Cluster Size
Custom (any ×256)
✅
Architecture Summary
Bill of Materials
| Component | Role / Side | Qty |
|---|
Per-Plane Breakdown (Single Plane View)
GPU × NIC Compatibility Matrix (Nokia 7220 IXR-H5-64O fabric · Tomahawk 5 ASIC)
| GPU Platform | BCM Thor2 (400G, PCIe Gen5) | NVIDIA CX7 (400G, PCIe Gen5) | NVIDIA CX8 (800G, PCIe Gen6) | BCM 800G (future / TBD) |
|---|
✓ Vendor-validated reference design
△ Feasible · suboptimal (over- or under-provisioned)
… Future / not generally shipping
All combinations are SerDes-compatible with the H5-64O (Tomahawk 5): 800G OSFP cages run 4×200G PAM4 (CX8) or break out to 2×400G as 4×100G PAM4 (CX7 / Thor2). Compatibility is about reference validation, host PCIe generation, and bandwidth balance — not signaling.
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