The Lenovo ThinkSystem ST550 2-socket 4U rack-mountable tower server provides outstanding performance and industry-leading reliability. Now available with second-generation Intel Xeon Scalable processors, the ST550 is ideal for small-to-medium businesses, distributed enterprises, retail, educational institutions and branch offices.
This product guide provides essential presales information to understand the ThinkSystem ST550 server, its key features and specifications, components and options, and configuration guidelines. This guide is intended for technical specialists, sales specialists, sales engineers, IT architects, and other IT professionals who want to learn more about the ST550 and consider its use in IT solutions.
Processor | Processor family | Intel® Xeon® Gold |
 | Processor manufacturer | Intel |
| Processor model | 6128 |
| Processor frequency | 3.4 GHz |
| Processor boost frequency | 3.7 GHz |
| Processor cores | 6 |
| Processor cache | 19.25 MB |
| Motherboard chipset | Intel® C624 |
| Number of processors installed | 1 |
| Thermal Design Power (TDP) | 115 W |
| Processor cache type | L3 |
| Processor socket | LGA 3647 (Socket P) |
| Processor lithography | 14 nm |
| Processor threads | 12 |
| Stepping | H0 |
| Processor codename | Skylake |
| Tcase | 74 °C |
| Maximum internal memory supported by processor | 768 GB |
| Memory types supported by processor | DDR4-SDRAM |
| Memory clock speeds supported by processor | 2666 MHz |
| Execute Disable Bit | Yes |
| Maximum number of PCI Express lanes | 48 |
| Processor package size | 76.0 x 56.5 mm |
| Supported instruction sets | AVX, AVX 2.0, AVX-512, SSE4.2 |
| Processor code | SR3J4 |
| Scalability | S4S |
| Conflict-Free processor | Yes |
Design | Chassis type | Tower (4U) |
| Product colour | Black |
| Redundant fans support | Yes |
Graphics | On-board graphics card | Yes |
| On-board graphics card model | Matrox G200 |
| Maximum graphics card memory | 16 MB |
Sustainability | Sustainability certificates | ENERGY STAR |
Processor special features | Enhanced Intel SpeedStep Technology | Yes |
| Intel Virtualization Technology for Directed I/O (VT-d) | Yes |
| Intel® Hyper Threading Technology (Intel® HT Technology) | Yes |
| Intel® Turbo Boost Technology | 2.0 |
| Intel® AES New Instructions (Intel® AES-NI) | Yes |
| Intel Trusted Execution Technology | Yes |
| Intel VT-x with Extended Page Tables (EPT) | Yes |
| Intel TSX-NI | Yes |
| Intel 64 | Yes |
| Intel Virtualization Technology (VT-x) | Yes |
| Intel TSX-NI version | 1.00 |
| Processor ARK ID | 120482 |
Memory | Internal memory | 32 GB |
| Internal memory type | DDR4-SDRAM |
| Memory slots | 12 |
| ECC | Yes |
| Memory clock speed | 2666 MHz |
| Memory layout (slots x size) | 1 x 32 GB |
Expansion slots | PCI Express slots version | 3.0 |
Power | Redundant power supply (RPS) support | Yes |
| Power supply | 750 W |
| Number of redundant power supplies installed | 1 |
Weight & dimensions | Width | 176 mm |
| Depth | 660 mm |
| Height | 438 mm |
| Weight | 36000 g |
Network | Ethernet LAN | Yes |
| Cabling technology | 10/100/1000Base-T(X) |
Ports & interfaces | USB 2.0 ports quantity | 5 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 3 |
| VGA (D-Sub) ports quantity | 1 |
Software | Compatible operating systems | Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware ESXi |
Storage | RAID support | Yes |
| RAID levels | 0, 1, 5, 6, 10, 50, 60 |
| Supported RAID controllers | 930-8i 2GB |
Performance | Performance management | XClarity Standard |
| Trusted Platform Module (TPM) | Yes |
| Trusted Platform Module (TPM) version | 1.2 |