lenovo Thinksystem SR555 RACK SERVER SR675 V3 SR645 V3 RACK SERVER Rack Server AMD EPYC 9224 2.7GHz 10SFF 9350-8i 1100W 1U Rack Server
Here’s a comparison table for the Lenovo ThinkSystem SR555, SR675 V3, and SR645 V3 rack servers:
| Feature | ThinkSystem SR555 | ThinkSystem SR675 V3 | ThinkSystem SR645 V3 |
|---|---|---|---|
| Form Factor | 2U Rack | 3U Rack | 2U Rack |
| Processor | AMD EPYC 7002/7003 | Dual Intel Xeon SP (4th Gen) | AMD EPYC 9004 Series |
| Max Cores | Up to 64 cores | Up to 120 cores (dual) | Up to 96 cores (single) |
| Memory Capacity | Up to 4TB DDR4 | Up to 6TB DDR5 | Up to 6TB DDR5 |
| Memory Slots | 16 DIMMs | 32 DIMMs | 24 DIMMs |
| Storage Bays | Up to 24 x 2.5″ or 12 x 3.5″ | Up to 24 x 2.5″ NVMe/SAS/SATA | Up to 24 x 2.5″ or 12 x 3.5″ |
| PCIe Expansion | Up to 6 x PCIe 4.0 | Up to 10 x PCIe 5.0 | Up to 8 x PCIe 5.0 |
| GPU Support | Optional (1-2 GPUs) | High GPU density (up to 4-6) | Up to 3 GPUs |
| Network Options | 1GbE, 10GbE, 25GbE | 1GbE, 10GbE, 25GbE, 100GbE | 1GbE, 10GbE, 25GbE, 100GbE |
| Power Supply | 550W, 800W, 1400W | 800W, 1400W, 2000W | 800W, 1400W, 2000W |
| Use Case | General-purpose, virtualization | High-performance computing, AI/ML | High-density virtualization, databases |
1. Lenovo ThinkSystem SR555 Rack Server
The ThinkSystem SR555 is a 2U rack server powered by AMD EPYC 7002/7003 series processors, delivering high core density and performance for virtualization, cloud, and enterprise workloads. It supports up to 64 cores, 4TB of DDR4 memory, and flexible storage configurations with up to 24 x 2.5″ or 12 x 3.5″ drives. With six PCIe 4.0 slots, it offers good expansion for networking and accelerators. The SR555 is ideal for businesses seeking a cost-effective, scalable AMD-based server for general-purpose computing, software-defined storage, and mid-range virtualization.
Key Features:
- 2U form factor (compact yet powerful)
- AMD EPYC 7002/7003 processors (up to 64 cores)
- Up to 4TB DDR4 RAMÂ (16 DIMM slots)
- Flexible storage: 24 x 2.5″ or 12 x 3.5″ bays
- Up to 6 x PCIe 4.0 slots (supports GPUs/NVMe)
- Ideal for: Virtualization, cloud, storage, and medium-density workloads
2. Lenovo ThinkSystem SR675 V3 Rack Server
The ThinkSystem SR675 V3 is a 3U high-performance server designed for AI, machine learning, and GPU-accelerated workloads. It features dual 4th Gen Intel Xeon Scalable processors, supporting up to 120 cores and 6TB of DDR5 memory. With up to 10 PCIe 5.0 slots, it excels in GPU density, supporting 4-6 high-performance GPUs (NVIDIA H100, A100, etc.). The SR675 V3 is optimized for data-intensive applications, including AI training, HPC, and virtualization, making it a powerhouse for enterprises needing extreme compute power.
Key Features:
- 3U form factor (enhanced GPU/expansion support)
- Dual 4th Gen Intel Xeon Scalable (up to 120 cores)
- Up to 6TB DDR5 RAMÂ (32 DIMM slots)
- 24 x 2.5″ NVMe/SAS/SATA bays (high-speed storage)
- 10 x PCIe 5.0 slots (supports 4-6 GPUs)
- Ideal for: AI/ML, HPC, GPU computing, databases
3. Lenovo ThinkSystem SR645 V3 Rack Server
The ThinkSystem SR645 V3 is a 2U dual-socket server featuring AMD EPYC 9004 series processors, offering up to 96 cores per CPU and 6TB of DDR5 memory. It balances high core density, storage flexibility (24 x 2.5″ or 12 x 3.5″ bays), and PCIe 5.0 expansion (8 slots). With support for up to 3 GPUs, it is well-suited for virtualized environments, databases, and software-defined storage. The SR645 V3 is a scalable, high-efficiency server for businesses needing AMD-based performance in a compact 2U footprint.
Key Features:
- 2U form factor (dense and powerful)
- AMD EPYC 9004 processors (up to 96 cores)
- Up to 6TB DDR5 RAMÂ (24 DIMM slots)
- 24 x 2.5″ or 12 x 3.5″ drive bays
- 8 x PCIe 5.0 slots (supports 3 GPUs)
- Ideal for: Virtualization, databases, enterprise apps, and storage
Summary of Best Use Cases:
- SR555: Budget-friendly AMD server for virtualization and storage.
- SR675 V3: Top-tier Intel-based AI/GPU server for HPC and deep learning.
- SR645 V3: High-core AMD EPYC server for databases and cloud workloads.
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