Lenovo ThinkSystem SR650a V4
GPU-dense variant of the ThinkSystem SR650 V4: a 2-socket 2U rack server (machine types 7DGC/7DGD) for Intel Xeon 6 P-core "Granite Rapids" 6700/6500-series processors, with up to 4 front-mounted double-wide GPUs (including NVIDIA H200 NVL with NVLink bridging) or 8 single-wide GPUs, 32 DDR5 DIMM slots (up to 8 TB), up to 8 x 2.5" or E3.S drives, and up to 6 rear PCIe 5.0 slots plus 2 OCP 3.0 slots. Built for AI training/inferencing, VDI and scale-out workloads; the SR650i V4 is a specific AI-inferencing configuration of the same chassis.
Memory
- Slots
- 32 DIMM (16 per CPU, 2 DIMMs per channel, 8 channels per CPU)
- Max
- 8 TB (32 x 256 GB 3DS RDIMM, 2 CPUs)
- Types
- Lenovo TruDDR5 RDIMM, MRDIMM
- Speed
- RDIMM up to 6400 MT/s at 1 DPC, 5200 MT/s at 2 DPC; MRDIMM up to 8000 MT/s at 1 DPC (no 2 DPC support)
- Protection
- ECC, SDDC and ADDDC (x4 DIMMs), memory mirroring
Storage
- Front
- 8 x 2.5" hot-swap (SAS, SATA or NVMe) or 8 x E3.S hot-swap NVMe, all front-accessible
- M.2
- 2 x front or rear hot-swap M.2 with optional RAID 0/1, or an internal M.2 module for 2 drives
- Onboard
- Onboard NVMe with optional RAID via Intel VROC; 8 NVMe drives with 1:1 (non-oversubscribed) PCIe connectivity
- RAID / HBA
- 12 Gb SAS/SATA RAID adapters, PCIe 3.0/4.0; NVMe RAID via Tri-Mode RAID adapter; non-RAID 12 Gb SAS/SATA HBA, PCIe 3.0/4.0; CFF (cabled) bay available so RAID/HBA doesn't consume a rear PCIe slot
- Max capacity
- 491.52 TB (8 x 61.44 TB 2.5" NVMe SSD or 8 x 61.44 TB E3.S NVMe); 245.76 TB (8 x 30.72 TB SAS SSD)
- Optical / tape
- No internal optical or tape drive bays
Graphics
- Onboard
- Embedded 2D graphics in XClarity Controller 3, 16 MB, max 1920x1200 32bpp at 60 Hz; rear VGA plus optional front Mini DisplayPort
- Single-wide GPU
- Up to 8 x NVIDIA L4 24 GB PCIe Gen4 passive (72 W, Controlled), low-profile, no aux power, front slots 16-23
- Double-wide GPU
- Up to 4 x NVIDIA RTX PRO 6000 Blackwell Server Edition 96 GB (450 W, slot-capped), NVIDIA L40S 48 GB (350 W); or up to 2 x NVIDIA RTX PRO 6000 Blackwell 96 GB (600 W) or NVIDIA H200 NVL 141 GB (600 W); or NVIDIA RTX PRO 4500 Blackwell 32 GB single-wide (165 W); all front slots 17-23, full-height full-length, aux power required
- NVLink
- 2-way NVLink bridge available for NVIDIA H200 NVL GPU pairs
- Rules
- A double-wide GPU in slot 17/19/21/23 disables the adjacent slot 16/18/20/22; 600 W GPUs (H200 NVL, RTX PRO 6000 600 W) require specific power/cooling configuration; ESXi factory preload cannot be selected with an NVIDIA GPU
Expansion
- Front (GPU) slots
- Up to 8 x PCIe 5.0 full-height slots (Risers 6 and 7, 4 slots each, CPU 2 and CPU 1 respectively) for GPUs
- Riser 2 (rear)
- 3 x full-height, two x16 and one x8 (CPU 1)
- Riser 3 (rear)
- 3 x full-height, two x16 and one x8 (CPU 2); requires 2 processors
- OCP 3.0
- 2 x dedicated OCP 3.0 SFF slots, PCIe 5.0 x8 or x16; one port per adapter can be shared with XCC for Wake-on-LAN/NC-SI
- Notes
- Rear hot-swap M.2 drives can replace rear slot 8; Riser 3 and Riser 6 require two processors; a CFF RAID/HBA bay is available for 2.5" front configurations without using a rear PCIe slot
Networking
- OCP 3.0 adapters
- 2-port and 4-port options with up to 400 GbE connectivity
- Management
- 1 x dedicated 1GbE RJ-45 XCC port; optional adapter to share one remote-management network connection across 4 servers
Power
- PSU options
- 800 W, 1300 W, 2000 W, 2700 W and 3200 W (80 PLUS Platinum or Titanium); most support 230 V, some also 115 V; HVDC and -48 V DC options; 240 V DC in China only
- Redundancy
- Up to 2 hot-swap redundant PSUs; one fan integrated in each PSU
- Cooling
- 6 fans (2 CPUs) or 5 fans (1 CPU), single- or dual-rotor 60 mm, N+1 redundant; optional open-loop liquid cooling (Processor Neptune Core)
Ports
- Front
- External diagnostics port, optional 2 x USB 3 (5 Gb/s, one for XCC local management), optional Mini DisplayPort v1.1a
- Rear
- 2 x USB 3 (5 Gb/s), 1 x VGA, 1 x RJ-45 1 GbE XCC management port; optional DB-9 serial port (in a slot); optional shared remote-management adapter (OCP slot)
- Internal
- Optional 1 x USB 3 (5 Gb/s) for OS/license key purposes
Physical
- Form factor
- 2U rack
- Dimensions
- 445 mm W x 87 mm H x 924 mm D (17.5 x 3.4 x 36.4 in), excluding EIA flanges, bezel and PSU handles
- Detailed depth
- 851 mm to rearmost I/O port; 889 mm to rearmost chassis feature / PSU handle
- Weight
- 38.8 kg (85.5 lb) maximum
- Machine types
- 7DGD (3-year warranty), 7DGC (1-year warranty)
- Environment
- ASHRAE class support depends on configuration and GPU power; see Lenovo's published thermal rules
Management
- BMC
- XClarity Controller 3 (XCC3, ASPEED AST2600) with OpenBMC; optional XCC3 Premier adds remote control features
- Local
- Operator panel with status LEDs; optional External Diagnostics Handset with LCD
- Tools
- XClarity One, XClarity Integrator plugins, XClarity Energy Manager
- Security
- Chassis intrusion switch, power-on and administrator passwords, Root of Trust module with TPM 2.0 and Platform Firmware Resiliency (PFR)
- Warranty
- 3-year (7DGD) or 1-year (7DGC) customer-replaceable-unit and onsite limited warranty, 9x5 next business day; optional service upgrades
Operating systems
- Windows
- Windows Server
- Red Hat
- RHEL 9.4-9.8, 10.0-10.2
- SUSE
- SLES 15 SP6, SP7, SLES 16
- Ubuntu
- 22.04 LTS, 24.04 LTS, 26.04 LTS
- VMware
- ESXi 8.0 U3, 9.0, 9.1 (factory preload not available with an NVIDIA GPU configured)
Processors
- Intel Xeon 6503P
- Intel Xeon 6505P
- Intel Xeon 6507P
- Intel Xeon 6511P
- Intel Xeon 6515P
- Intel Xeon 6517P
- Intel Xeon 6520P
- Intel Xeon 6521P
- Intel Xeon 6527P
- Intel Xeon 6530P
- Intel Xeon 6714P
- Intel Xeon 6724P
- Intel Xeon 6725P
- Intel Xeon 6730P
- Intel Xeon 6731P
- Intel Xeon 6732P
- Intel Xeon 6736P
- Intel Xeon 6737P
- Intel Xeon 6740P
- Intel Xeon 6741P
- Intel Xeon 6745P
- Intel Xeon 6747P
- Intel Xeon 6760P
- Intel Xeon 6761P
- Intel Xeon 6767P
- Intel Xeon 6781P
- Intel Xeon 6787P