Lenovo ThinkSystem SR950
The ThinkSystem SR950 is Lenovo's modular 4U enterprise flagship server engineered for extreme mission-critical workloads, scaling from 2 up to 8 Intel Xeon Scalable processors (Skylake and Cascade Lake) in a single coherent symmetric multiprocessing (SMP) system. With 96 DDR4 DIMM slots delivering up to 12TB of RAM (or 24TB with Intel Optane Persistent Memory 100 Series), it is specifically designed to run massive SAP HANA in-memory databases, large Oracle and Microsoft SQL Server instances, and real-time transaction processing. Its modular front-access tray design simplifies scaling and maintenance. Secondary market buyers must confirm UPI interconnect cable and midplane board integrity, verify all 8 sockets share identical processor steppings, and check four-way power supply redundancy.
Also written as: ThinkSystem SR950, SR950 8-Socket, 7X11, 7X12, 7X13
Specifications
| Brand | Lenovo |
|---|---|
| Family | ThinkSystem SR |
| Form factor | 4U rack |
| Released | Jul 2017 |
| End of sale | Jun 2023 |
| Cpu sockets | 8 |
| Cpu platform | Up to 8 Intel Xeon Scalable 1st Gen (Skylake-SP) or 2nd Gen (Cascade Lake-SP) processors up to 205W TDP |
| Memory slots | 96 |
| Memory type | DDR4-2666 / DDR4-2933 RDIMM / LRDIMM and Intel Optane Persistent Memory 100 Series |
| Memory max (GB) | 12,288 |
| Drive bays | Up to 24x 2.5-inch SFF hot-swap bays (supporting up to 12 direct NVMe PCIe 3.0 SSDs) |
| Pcie slots | Up to 14 PCIe 3.0 slots plus dedicated LOM slot |
| Network onboard | Modular LOM slot (1GbE/10GbE) plus dedicated 1GbE XClarity management port |
| Power supply | Up to 4 redundant 1100W / 1600W / 2000W AC 80 PLUS Platinum hot-swap power supplies |
Reference prices (last 14 days, updated 2026-10-27)
Refurbished: USD 18,500 (1 sighting, Oct 2026)
Used: USD 8,900 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| ebay.com | used | USD 8,900 | 4-socket populated base unit with 4x Xeon Platinum 8176, 256GB RAM, 4x 2000W PSUs | 2026-10-27 |
| serversupply.com | refurbished | USD 18,500 | 8-socket full build with 8x Xeon Platinum 8268, 512GB RAM, refurbished | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Compatible parts
Memory
- 4X77A08631 Lenovo ThinkSystem 16GB TruDDR4 2933MHz (1Rx4 1.2V) RDIMM
- 4X77A08633 ThinkSystem 32GB TruDDR4 2933MHz (2Rx4 1.2V) RDIMM
- 4X77A08635 Lenovo ThinkSystem 64GB TruDDR4 2933MHz (2Rx4 1.2V) RDIMM
RAID controllers
- 7Y37A01085 Lenovo ThinkSystem RAID 930-16i 4GB Flash PCIe 12Gb Adapter
HBAs
- 7Y37A01089 Lenovo ThinkSystem 430-16i SAS/SATA 12Gb HBA
SSDs
- 4XB7A17128 ThinkSystem 2.5" S4620 3.84TB Mixed Use SATA 6Gb HS SSD
Equivalent models from other brands
- HPE Superdome Flex
Buying a used SR950: what to check
Inspect SMP midplane and UPI link cables across upper and lower processor compute trays, ensure all 8 CPUs have identical stepping and VRM modules, verify XCC Enterprise license, and test all four 2000W power supplies.
FAQ
How many processor sockets does the ThinkSystem SR950 support?
It supports modular scaling from 2 to 8 Intel Xeon Scalable processors in a single 4U chassis.
What is the maximum memory capacity of the SR950?
It supports up to 12TB with 128GB DDR4 DIMMs, or up to 24TB using a combination of DDR4 memory and Intel Optane DC Persistent Memory.
What workloads is the SR950 primarily built for?
It is built for massive SAP HANA scale-up databases, large-scale financial transaction processing, and monolithic database consolidation.
Buying or selling SR950?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Lenovo ThinkSystem SR950 Server (Intel Xeon SP Gen 2) Product Guide, checked 2026-10-27