lLenovo Thinksystem SR675 V3 Thinkssytem SR665 V3 Rack server AMD EPYC Processor 2U Server case SR675 V3
Here’s a detailed comparison table between the Lenovo ThinkSystem SR675 V3 and ThinkSystem SR665 V3 rack servers:
| Feature | ThinkSystem SR675 V3 | ThinkSystem SR665 V3 |
|---|---|---|
| Form Factor | 4UÂ Rack Server | 3UÂ Rack Server |
| Processor Support | Dual AMD EPYC 9004 (Genoa/Zen 4) | Dual AMD EPYC 9004 (Genoa/Zen 4) |
| Max CPU Cores | Up to 96 cores/socket (192 threads) | Up to 96 cores/socket (192 threads) |
| Memory Capacity | 6TB DDR5Â (48 DIMM slots) | 6TB DDR5Â (48 DIMM slots) |
| Storage Options | 24x 2.5″ or 12x 3.5″ bays | 16x 2.5″ or 8x 3.5″ bays |
| PCIe Slots | 11x PCIe 5.0Â (GPU-optimized) | 8x PCIe 5.0Â (balanced expansion) |
| GPU Support | Up to 8x GPUs (NVIDIA/AMD) | Up to 4x GPUs (NVIDIA/AMD) |
| Drive Bays | 12x NVMe + 12x SAS/SATAÂ (hybrid) | 8x NVMe + 8x SAS/SATAÂ (hybrid) |
| Networking | 200/400GbEÂ (OCP 3.0 support) | 100/200GbEÂ (OCP 3.0 support) |
| Power Supplies | 2000W/2400WÂ (80+ Titanium) | 1600W/2000WÂ (80+ Platinum) |
| Cooling System | Rear-door heat exchanger (optional) | Optimized airflow (standard) |
| Use Cases | AI/ML, HPC, Hyperscale | Virtualization, Databases, Cloud |
| Ideal Workloads | Large-scale AI training, 3D rendering | Enterprise apps, mid-range GPU workloads |
Lenovo ThinkSystem SR675 V3 vs SR665 V3: High-Performance AMD-Powered Rack Servers
1. Lenovo ThinkSystem SR675 V3 – The Ultimate GPU Powerhouse
The ThinkSystem SR675 V3 is a 4U GPU-optimized server designed for AI, machine learning, and high-performance computing (HPC) workloads. Featuring dual AMD EPYC 9004 (Genoa) processors, it delivers exceptional compute density and supports up to 8 high-end GPUs, making it ideal for the most demanding parallel processing tasks.
Key Features:
- Unmatched GPU Density: Accommodates 8x full-height, full-length GPUs (NVIDIA H100/A100 or AMD Instinct) for large-scale AI training and rendering
- Extreme Compute Power: Dual AMD EPYC 9004 CPUs (up to 96 cores/192 threads per socket)
- Massive Memory Bandwidth:Â 6TB DDR5Â across 48 DIMM slots
- Flexible Storage: 24x 2.5″ or 12x 3.5″ bays with hybrid NVMe/SAS/SATA support
- Cutting-Edge I/O: 11x PCIe 5.0 slots for maximum expansion
- Advanced Cooling: Optional rear-door heat exchanger for efficient thermal management
- High-Speed Networking: 400GbE-ready with OCP 3.0 support
Best For:Â Large language model training, scientific simulations, 3D rendering, and hyperscale AI workloads.
2. Lenovo ThinkSystem SR665 V3 – Balanced Performance Server
The ThinkSystem SR665 V3 is a 3U dual-socket server that balances compute density, GPU acceleration, and storage flexibility. Powered by the same AMD EPYC 9004 processors, it’s optimized for enterprise virtualization, databases, and mid-range GPU workloads.
Key Features:
- Optimized GPU Support: 4x GPUs (NVIDIA/AMD) for accelerated computing
- High-Core Count: Dual AMD EPYC 9004 CPUs (up to 96 cores/192 threads)
- Large Memory Capacity:Â 6TB DDR5Â across 48 DIMM slots
- Versatile Storage: 16x 2.5″ or 8x 3.5″ bays with NVMe options
- PCIe 5.0 Expansion: 8 slots for storage and networking adapters
- Enterprise Networking: 200GbE-ready with OCP 3.0 support
- Efficient Power: 2000W 80+ Platinum redundant PSUs
Best For:Â Virtualized environments, mid-range AI/ML, database clusters, and private cloud deployments.
Key Differences Summary
| Feature | SR675 V3 (4U) | SR665 V3 (3U) |
|---|---|---|
| GPU Capacity | 8x GPUs | 4x GPUs |
| Drive Bays | 24x 2.5″/12x 3.5″ | 16x 2.5″/8x 3.5″ |
| PCIe Slots | 11x PCIe 5.0 | 8x PCIe 5.0 |
| Networking | Up to 400GbE | Up to 200GbE |
| Cooling | Liquid cooling options | Air-optimized |
| Workload Focus | Large-scale AI/HPC | Enterprise virtualization |
Which Server Should You Choose?
- For Cutting-Edge AI/GPU Workloads → SR675 V3 (8 GPUs, 4U, maximum expansion)
- For Enterprise & Mid-Range GPU Needs → SR665 V3 (4 GPUs, 3U, balanced density)
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