Lenovo ThinkSystem SR650 V4 · 7DLNCTO1WW

CTO base part number

7DLNCTO1WW

Ordering-code scope

Machine Type/Model General purpose

Documented ordering description

ThinkSystem SR650 V4 – SAP HANA configurations with 3-year base warranty

Platform in this guide

ThinkSystem SR650 V4

Form factor

2U rack

Processor

One or two Intel Xeon 6700P-series or 6500P-series processors (formerly codenamed "Granite Rapids"). Supports processors up to 86 cores and 172 threads, core speeds of up to 4.0 GHz, and TDP ratings of up to 350 W.

Memory

32 DIMM slots with two processors (16 DIMM slots per processor). Each processor has 8 memory channels, with 2 DIMMs per channel (DPC). 16 DIMM slots with 2 processors when the Compute Complex Neptune Core liquid cooling is used (machine type 7DK2). Lenovo TruDDR5 RDIMMs and MRDIMMs are supported. RDIMMs operate at up to 6400 MHz at 1 DPC and up to 5200 MHz at 2 DPC. MRDIMMs are supported up to 8000 MHz at 1 DPC (no support for 2 DPC). CXL 2.0 memory is also supported, up to 12 DIMMs (6 per processor) installed in E3.S 2T drive bays.

Memory maximum

Up to 8TB by using 32x 256GB 3DS RDIMMs

Memory protection

ECC, SDDC (for x4-based memory DIMMs), ADDDC (for x4-based memory DIMMs), and memory mirroring.

Disk drive bays

Up to 16x 3.5-inch or 40x 2.5-inch or 32x E3.S hot-swap drive bays: Front bays can be 3.5-inch (8 or 12 bays), or 2.5-inch (8, 16 or 24 bays), or E3.S (32 bays) Middle bays are 2.5-inch (8 bays) simple-swap Rear bays can be 3.5-inch (4 bays) or 2.5-inch (4 or 8 bays) Combinations of SAS/SATA, NVMe, or AnyBay (supporting SAS, SATA or NVMe) are available M.2 support, for OS boot and drive storage support: 2x front or rear hot-swap M.2 drive bays, or Internal M.2 module supporting up to two M.2 drives See Supported drive bay combinations for details. AnyBay bays support SAS, SATA or NVMe drives. NVMe bays only support NVMe drives.

Storage controllers

Onboard NVMe ports with optional RAID support using Intel VROC NVMe RAID support using a Tri-mode RAID adapter 12 Gb SAS/SATA RAID adapters, PCIe 4.0 or PCIe 3.0 host interface 12 Gb SAS/SATA HBA (non-RAID), PCIe 4.0 or PCIe 3.0 host interface

Network interfaces

Two dedicated OCP 3.0 SFF slots with a PCIe 5.0 host interface, either x8 or x16. Support a variety of 2-port and 4-port adapters with up to 400 GbE network connectivity. One port of each installed OCP adapter can optionally be shared with the XClarity Controller (XCC) management processor for Wake-on-LAN and NC-SI support.

PCI Expansion slots

Up to 10x slots, all at the rear, plus 2x OCP slots. All slots are PCIe 5.0. The use of Riser 3 and 4 requires 2 processors. Riser 1: 2x low-profile slots, x8 or x16 (CPU 1) Riser 2: 3x full-height slots, two x16 and one x8 (CPU 1) Riser 3: 3x full-height slots, two x16 and one x8 (CPU 2) Riser 4: 2x low-profile slots, x8 or x16 (CPU 2) Other slot configurations are available. See the I/O expansion for details. The server also supports rear 2.5" or 3.5" drive bays, and rear hot-swap M.2 drives, instead of some slots. If the server has 8x 2.5-inch rear drive bays, then Riser 1 slots are full-height. All configurations include at the rear of the server: 2x OCP slots with PCIe 5.0 x16 or x8 connection For 2.5-inch front drive configurations, the server supports the installation of a CFF RAID adapter or HBA in a dedicated area that does not consume any of the rear PCIe slots.

GPU support

Support for up to 10x single-wide GPUs or 2x double-wide GPUs

Cooling

6x (with two processors installed) or 5x (with one processor installed) single-rotor or dual-rotor hot swap 60 mm fans, configuration dependent. Fans are N+1 redundant, tolerating a single-rotor failure. One fan integrated in each power supply. For customers with water infrastructure in their data center, the server also supports open-loop water cooling for efficient heat removal.

Power supply

Up to two hot-swap redundant AC power supplies, 80 PLUS Platinum or 80 PLUS Titanium certification. 800W, 1300W, 2000W, 2700W and 3200W AC options. All AC power supplies support 230V power; some also support 115V input supply. In China only, all power supply options support 240 V DC. Support for HVDC and -48V DC power supply options.

Systems management

Operator panel with status LEDs. Optional External Diagnostics Handset with LCD display. Clarity Controller 3 (XCC3) embedded management based on the ASPEED AST2600 baseboard management controller (BMC) and OpenBMC, XClarity One centralized infrastructure delivery, XClarity Integrator plugins, and XClarity Energy Manager centralized server power management. Optional XCC3 Premier to enable remote control functions and other features.

Dimensions

Width: 445 mm (17.5 in.), height: 87 mm (3.4 in.), depth: 796 mm (31.3 in.). See Physical and electrical specifications for details.

Weight

Maximum weight: 38.8 kg (85.5 lb)

Selection qualification

CTO is a configuration base code, not a fixed installed BOM. Platform limits do not mean simultaneously installed CPU, RAM, drives or GPUs. Verify machine type, CPU count, memory, backplane, cooling and power. AI/HPC denotes an ordering scope, not included accelerators. Confirm local warranty and supply separately.

Specification source: Lenovo ↗
Checked against documentation: 19.10.2026