High Performance Thinksystem SR635 SR645 SR665 Rack Server CPU AMD EPYC SP5 GENOA 9124 16C 2.6-2.7GHz 200W
Here’s a comparison table for the Lenovo ThinkSystem SR635, SR645, and SR665 rack servers based on key specifications:
| Feature | ThinkSystem SR635 | ThinkSystem SR645 | ThinkSystem SR665 |
|---|---|---|---|
| Processor | AMD EPYC 7002/7003 | AMD EPYC 7002/7003 | AMD EPYC 7002/7003 |
| Max Cores | Up to 64 cores | Up to 64 cores | Up to 64 cores |
| Form Factor | 1U | 2U | 2U |
| Max RAM | 4TB (32x DDR4 DIMMs) | 4TB (32x DDR4 DIMMs) | 8TB (64x DDR4 DIMMs) |
| Drive Bays | Up to 24x 2.5″ or 12x 3.5″ | Up to 24x 2.5″ or 12x 3.5″ | Up to 48x 2.5″ or 24x 3.5″ |
| Storage Controllers | HW RAID (up to 16x NVMe) | HW RAID (up to 16x NVMe) | HW RAID (up to 32x NVMe) |
| PCIe Slots | Up to 6x (Gen4) | Up to 8x (Gen4) | Up to 10x (Gen4) |
| GPU Support | Limited (low-profile) | Yes (up to 3x GPUs) | Yes (up to 6x GPUs) |
| Network Options | 1GbE/10GbE/25GbE | 1GbE/10GbE/25GbE | 1GbE/10GbE/25GbE/100GbE |
| Power Supply | 550W/800W/1600W | 550W/800W/1600W/2000W | 800W/1600W/2000W |
| Use Case | General-purpose, virtualization | High-performance, databases, AI/ML | High-density, AI/ML, virtualization |
enovo ThinkSystem SR635 Rack Server
The ThinkSystem SR635 is a 1U single-socket rack server powered by AMD EPYC™ 7002/7003 series processors, delivering outstanding performance for a wide range of workloads. With support for up to 64 cores, 4TB of DDR4 memory (16 DIMM slots), and 10x 2.5″ or 4x 3.5″ drive bays, this compact server is ideal for space-constrained environments needing high core density. The SR635 features PCIe 4.0 support and can accommodate up to 3x single-width GPUs, making it suitable for VDI, virtualization, and software-defined storage. Its 1U form factor provides excellent rack density while maintaining enterprise-class features like Lenovo’s XClarity management system.
Best for:
- High-density virtualization
- Software-defined storage
- Web hosting and cloud applications
- Medium-scale databases
Lenovo ThinkSystem SR645 Rack Server
The ThinkSystem SR645 is a 2U dual-socket rack server featuring AMD EPYC™ 7002/7003 series processors, offering exceptional performance for demanding workloads. Supporting up to 128 cores, 8TB of DDR4 memory (32 DIMM slots), and 24x 2.5″ or 12x 3.5″ drive bays, this server provides outstanding scalability. The SR645 includes PCIe 4.0 support and can house up to 4x double-width GPUs, making it perfect for AI/ML, virtualization, and high-performance computing. With excellent storage flexibility and expansion capabilities, it’s designed for data-intensive applications while maintaining efficient power consumption.
Best for:
- Enterprise virtualization
- AI and machine learning workloads
- High-performance databases
- Data analytics and HPC
Lenovo ThinkSystem SR665 Rack Server
The ThinkSystem SR665 is a 2U dual-socket powerhouse built with AMD EPYC™ 7002/7003 series processors, delivering extreme performance for mission-critical applications. Supporting up to 128 cores, 8TB of DDR4 memory (32 DIMM slots), and 24x 2.5″ or 12x 3.5″ drive bays, this server offers exceptional scalability. The SR665 features PCIe 4.0 support and can accommodate up to 6x double-width GPUs, making it ideal for the most demanding GPU-accelerated workloads. With superior storage density, expansion capabilities, and support for high-speed networking, it’s designed for the most performance-intensive applications in modern data centers.
Best for:
- GPU-accelerated AI and deep learning
- Mission-critical enterprise applications
- High-performance computing (HPC)
- Large-scale virtualization and cloud deployments
