Factory HPE Cray XD2000 XD675 XD670 High-Density 2U Rack Server High-Bandwidth Xeon/AMD CPU 16GB/32GB/64GB
Here’s a detailed comparison table for the HPE Cray XD2000, XD675, and XD670 supercomputing systems:
| Feature | HPE Cray XD2000 | HPE Cray XD675 | HPE Cray XD670 |
|---|---|---|---|
| Form Factor | 2U Node | 1U Node | 1U Node |
| Processor | AMD EPYC 9004 (Genoa) | AMD EPYC 9004 (Genoa) | Intel Xeon Scalable (Sapphire Rapids) |
| Max Cores/Node | 192 cores | 192 cores | 120 cores |
| Memory Capacity | 2TB DDR5 + 512GB HBM | 1TB DDR5 | 1.5TB DDR5 |
| Accelerator Support | 4x AMD Instinct MI300 | 4x NVIDIA H100 | 4x Intel Ponte Vecchio |
| Interconnect | Slingshot-11 (400Gb/s) | Slingshot-11 (400Gb/s) | Slingshot-11 (400Gb/s) |
| Storage Bandwidth | 60GB/s per node | 45GB/s per node | 50GB/s per node |
| Cooling | Direct Liquid Cooling (DLC) | Air/Liquid Hybrid | Air/Liquid Hybrid |
| Power Efficiency | 38 PFLOPS/Watt | 32 PFLOPS/Watt | 28 PFLOPS/Watt |
| Max Rack Density | 8 nodes (16U) | 16 nodes (16U) | 16 nodes (16U) |
| Use Case Focus | Exascale AI/ML | HPC & Scientific Computing | Hybrid HPC/AI Workloads |
| Special Features | Unified CPU/GPU Memory Space | NVLink Switch System | OneAPI Optimization |
| Starting Price | $500,000/rack | $450,000/rack | $400,000/rack |
HPE Cray XD2000: The Exascale AI Powerhouse
Built for: Large-scale AI training, generative models, and unified memory workloads
Key Innovation: AMD EPYC + Instinct MI300 unified architecture
The HPE Cray XD2000 redefines AI supercomputing with its 2U dual-node design, combining 192-core EPYC 9004 CPUs and 4x AMD Instinct MI300 accelerators per node. Its breakthrough unified CPU/GPU memory space eliminates data bottlenecks for massive LLM training.
Standout Features:
✔ 8TB/s memory bandwidth – 2x faster than competitors
✔ Direct Liquid Cooling (DLC) enables 38 PFLOPS per watt efficiency
✔ Slingshot-11 interconnect with adaptive routing
✔ 60GB/s storage bandwidth per node
Perfect For:
• National AI research initiatives
• Billion-parameter generative AI
• Climate prediction modeling
Starting at: $500,000 per rack (4 nodes)
HPE Cray XD675: The HPC Workhorse
Built for: Traditional scientific computing and CUDA-optimized workloads
Key Innovation: NVIDIA H100 + AMD EPYC balanced design
The 1U XD675 delivers 42 TFLOPS FP64 performance per node with 4x NVIDIA H100 GPUs and 192-core EPYC processors, making it ideal for physics simulations and molecular modeling.
Standout Features:
✔ NVLink Switch System for GPU-to-GPU communication
✔ Hybrid air/liquid cooling flexibility
✔ 5TB/s memory bandwidth
✔ 45GB/s storage throughput
Perfect For:
• Computational fluid dynamics
• Nuclear energy research
• Pharmaceutical discovery
Starting at: $450,000 per rack (16 nodes)
HPE Cray XD670: The Hybrid Computing Bridge
Built for: Government and enterprise HPC/AI convergence
Key Innovation: Intel Xeon + Ponte Vecchio multi-architecture support
The XD670 combines 120-core Intel Sapphire Rapids CPUs with 4x Intel Ponte Vecchio GPUs, optimized for OneAPI workloads requiring x86 and GPU acceleration.
Standout Features:
✔ 28 TFLOPS FP64 with AI matrix extensions
✔ 4TB/s unified memory bandwidth
✔ 50GB/s storage bandwidth
✔ Air/liquid cooling options
Perfect For:
• Defense applications
• Financial risk modeling
• Cross-platform HPC development
Starting at: $400,000 per rack (16 nodes)
Comparison Cheat Sheet
| Need… | Best Choice | Key Advantage |
|---|---|---|
| AI/ML at exascale | XD2000 | Unified CPU/GPU memory |
| CUDA-based HPC | XD675 | NVIDIA H100 + NVLink |
| Intel ecosystem | XD670 | OneAPI optimization |
| Liquid cooling mandatory | XD2000 | DLC-only design |
| Maximum rack density | XD675/XD670 | 16 nodes per rack |
| Mixed FP64/AI workloads | XD670 | Balanced CPU/GPU ratio |
Common Advantages:
• Cray Programming Environment for all systems
• Slingshot-11 adaptive routing network
• HPE Performance Cluster Manager
Pro Tip: The XD2000 reduces LLM training times by 40% compared to conventional GPU clusters through its unified memory architecture.
