Sapphire contains 4,096 compute nodes. Each node contains a 2.6‑GHz Opteron 64‑bit dual‑core processor and dedicated memory. The nodes are connected to each other in a three‑dimensional torus using a HyperTransport link to a dedicated Cray SeaStar communications engine that provides high‑bandwidth, high‑performance interconnects. Sapphire is rated at 42.6 TFLOPS and contains 374 TBytes of Fibre Channel RAID disk storage.
| Processors | 64 2.6-GHz Dual-Core Service Nodes 4,096 2.6-GHz Dual-Core Compute Nodes |
| Computational Cores | 8,192 |
| Computational Capacity | 42.6 TFLOPS peak computational performance |
| Aggregate Memory Size | 16.5 TBytes |
| Total Disk Storage | 374 TBytes, Fibre Channel RAID |
| Network Interface | Cray Seastar |
Last update: January 13, 2010
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