Lenovo ThinkSystem SR650 V3

Lenovo's 2-socket 2U rack server (machine types 7D75/7D76) for 4th and 5th Gen Intel Xeon Scalable processors up to 64 cores and 385 W, with 32 DDR5 DIMM slots (up to 8 TB), up to 40 x 2.5" or 20 x 3.5" drives across front, mid and rear bays, up to 12 PCIe slots and up to three double-wide GPUs. A general-purpose workhorse for virtualization, databases, VDI and storage-heavy work.

Memory

Slots: 32 DIMM (16 per CPU; 8 channels per CPU, 2 DIMMs per channel)
Max: 8 TB (32 x 256 GB 3DS RDIMM); 4 TB with one CPU
Types: Lenovo TruDDR5 RDIMM (10x4 and x8), 9x4 RDIMM and 3DS RDIMM; no UDIMM or LRDIMM. DIMM types, DRAM densities (16/24/32 Gb) and x4/x8 cannot be mixed; 24/48/96 GB DIMMs must all be the same part number
Speed, 5th Gen CPUs: 1 DPC: RDIMM up to 5600 MT/s, 3DS RDIMM up to 5200 MT/s; 2 DPC: up to 4400 MT/s (4800 MT/s with Performance+ RDIMMs); capped at the CPU's memory speed
Speed, 4th Gen CPUs: 1 DPC up to 4800 MT/s; 2 DPC up to 4400 MT/s
5600 MHz options: 16 GB 1Rx8, 32 GB 2Rx8, 64/96/128 GB 2Rx4 RDIMM; 128 GB 4Rx4 and 256 GB 8Rx4 3DS RDIMM (5th Gen CPUs; the 128 GB 2Rx4 RDIMM also runs at 4800 MT/s with 4th Gen)
4800 MHz options: 16 GB 1Rx8, 32 GB 2Rx8, 64 GB and 96 GB 2Rx4 RDIMM (4th Gen CPUs and Bronze 3508U / Silver 4509Y, 4510, 4510T). Lenovo Docs also lists 48 GB x8, 32 GB 1Rx4, 9x4 32/64 GB and 128/256 GB 3DS 4800 MHz modules for 4th Gen, and 24/48 GB x8 and 32/48 GB 1Rx4 5600 MHz modules for 5th Gen
Population: 1, 2, 4, 6, 8, 12 or 16 DIMMs per CPU; 24/48 GB and 96 GB DIMMs have tighter quantity rules; at most two DIMM capacities per CPU; minimum 16 GB
Protection: ECC, bounded fault, SDDC (x4 DIMMs), ADDDC (x4 but not 9x4, Gold/Platinum CPUs), memory mirroring (not with 9x4), rank sparing
Persistent memory: Not supported (Optane PMem 300 options were withdrawn in Feb 2023)
Thermal rules: 128 GB 3DS RDIMM (feature BY8F) with 12 x 3.5" front bays rules out mid and rear bays; large DIMMs lower the maximum ambient temperature

Storage

Front 2.5": 8, 16 or 24 x 2.5" hot-swap from up to three 8-bay backplanes (SAS/SATA, AnyBay or NVMe; Gen4 or Gen5), or a 24-bay SAS/SATA expander backplane
Front 3.5": 8 x SAS/SATA, 8 SAS/SATA + 4 AnyBay, 8 SAS/SATA + 4 NVMe, or 12 x SAS/SATA with expander backplane
Front with slots: Up to 16 x 2.5" alongside two front PCIe slots and a front OCP slot
Mid-chassis: 4 x 3.5" SAS/SATA, or 8 x 2.5" SAS/SATA or NVMe (Gen4/Gen5), simple-swap (not hot-swap); needs Riser 1; no GPUs or full-length cards
Rear: 2 or 4 x 3.5" SAS/SATA; 4 x 2.5" SAS/SATA, NVMe Gen5 or AnyBay Gen5; or 8 x 2.5" SAS/SATA (fewer rear PCIe slots)
7mm: 2 x 7mm SATA or NVMe hot-swap in the slot 3 or slot 6 position (not both); RAID via VROC, RAID 540-8i, or integrated Broadcom/Marvell RAID kits
M.2: Internal module for 1-2 drives (on the air baffle or mid cage): M.2 SATA/x4 NVMe 2-Bay Adapter (VROC or RAID 540-8i), M.2 NVMe 2-Bay RAID Adapter (Marvell), M.2 RAID B540i-2i SATA/NVMe (Broadcom). M.2 and 7mm are mutually exclusive
Onboard: 14 x SATA (Intel VROC SATA RAID 0/1/5/10); up to 20 x onboard NVMe ports (VROC NVMe Standard RAID 0/1/10, Premium adds RAID 5, RAID1 Only license)
RAID / HBA: RAID 540-8i / 540-16i (0/1/10); RAID 940-8i 4/8 GB, 940-16i 4/8 GB, 940-32i 8 GB and 940-16i 8 GB internal CFF (0/1/10/5/50/6/60, Tri-Mode for U.3 NVMe); 440-8i / 440-16i HBA, 440-16i internal CFF HBA, 48-port 12 Gb internal expander; PCIe Gen4/Gen5 NVMe retimers (up to 4). Lenovo Docs also lists RAID 5350/9350/5450/9450 and 4350/4450/450W-16e HBAs
NVMe maximum: 36 x 2.5" without oversubscription (24 front, 28 front+rear, 32 front+mid, 36 front+mid+rear); 8 in a 3.5" chassis
Max capacity: 4,423.68 TB (36 x 122.88 TB NVMe); 480 TB with 20 x 24 TB 3.5" HDDs
Optical: None internal; external USB DVD option

Graphics

Onboard: 2D graphics in XClarity Controller 2, 16 MB, max 1920x1200 32bpp at 60 Hz
Single-wide GPUs: Up to 8: NVIDIA L4 24GB, RTX A1000 8GB, RTX A400 4GB; withdrawn: NVIDIA A2 16GB, T1000 8GB, T400 4GB
Double-wide GPUs: Up to 3 in slots 2, 5 and 7: NVIDIA L40S 48GB; withdrawn: NVIDIA H100 NVL 94GB, H100 80GB, H800 80GB, L40 48GB, A100 80GB, A800 80GB, A40 48GB, A30 24GB, A16 64GB, RTX 6000 Ada, RTX A6000, RTX A4500, RTX A2000 12GB; AMD Instinct MI210
Rules: All GPUs identical; a double-wide GPU in slot 2/5/7 blocks slot 1/4/8; no mid or rear drive bays and no 12 x 3.5" backplanes with GPUs; 3 double-wide GPUs need the 16 x 2.5" front configuration (24 x 2.5" allows 2, no A40); RTX A400/A1000/T1000/T400 not in Gen5 risers; controlled GPUs only on 'for AI' base models
Kits: GPU Full Length Thermal Option Kit 4X67A82883 and DW GPU Cable Kit 4X97A82948 for field installs; 'GPU-Ready' CTO options

Expansion

Slots 1-3 (Riser 1): Full height, CPU 1: x16/x8/x8 (Gen5 or Gen4), x16/x16/empty (slot 3 for COM port or 7mm drives), empty/x16/x16 (double-wide GPU in slot 2), or single x16 Gen4 slot (with 4 x 3.5" rear drives)
Slots 4-6 (Riser 2): Full height, CPU 2: same riser choices as Riser 1 (double-wide GPU in slot 5; 7mm or COM port in slot 6)
Slots 7-8 (Riser 3): 2 x full height x16/x16 (Gen5 or Gen4; double-wide GPU in slot 7; slot 8 needs CPU 2) or x8/x8 (Gen5 or Gen4); with Riser 3 onboard NVMe is limited to 12 drives
Slots 7-10 (Riser 3+4): 4 x low-profile x8 (Gen5/Gen4); the 10-slot rear layout is supported with 8 or 16 x 2.5" SAS/SATA or AnyBay front bays
Slots 11-12 (front): 2 x PCIe 4.0 x16 full-height half-length (slot 11 CPU 2, slot 12 CPU 1), with up to 16 x 2.5" front bays
OCP 3.0: 1 x OCP 3.0 SFF: rear slot 13 PCIe 5.0 x16 or front slot 14 PCIe 4.0 x16 (one or the other)
Internal: Dedicated CFF RAID/HBA bay (2.5" chassis only), cabled x8, uses no slot
Notes: All x8 slots are open-ended; up to 10 rear + 2 front slots; serial port bracket in slot 3 or 6 (slot 6 only with double-wide GPUs); CXL 1.1 ready

Networking

OCP 3.0 adapters: Broadcom 5719 4 x 1GbE, Intel I350 4 x 1GbE, Broadcom 57412 4 x 10GBASE-T, Broadcom 57416 2 x 10GBASE-T, Intel X710-T2L / X710-T4L 10GBASE-T, Broadcom 57414 2 x 25GbE, Broadcom 57504 4 x 25GbE, Intel E810-DA2 / E810-DA4 25GbE, Mellanox ConnectX-6 Lx 2 x 25GbE, Broadcom 57508 2 x 100GbE (withdrawn: Intel I350 v1, Broadcom 57454 4 x 10GBASE-T)
Shared port: One OCP port can be shared with the XCC for NC-SI and Wake-on-LAN
PCIe NICs: 1 GbE to 400 Gb: Broadcom 5719/57412/57414/57416/57504/57508, Intel I350-T4/X710/E810, Mellanox ConnectX-6 Lx/Dx/HDR, NVIDIA ConnectX-7 NDR200 and NDR400, Solarflare X2522-Plus, NVIDIA BlueField-3 B3220 DPU (slots 1, 2, 4, 5)
Fibre Channel: Emulex 16/32/64 Gb and QLogic 16/32 Gb HBAs
Management: 1 x 1 GbE RJ-45 XCC port; optional second XCC port via the V3 Management NIC Adapter Kit in the rear OCP slot

Power

PSU options: 750 W Titanium (230 V), 750 W Platinum (115/230 V), 1100 W Titanium (230 V), 1100 W Platinum (115/230 V), 1800 W Titanium or Platinum (230 V), 2400 W Platinum (230 V), 2600 W Titanium (230 V), 1100 W -48 V DC; 240 V DC input in China only
Redundancy: 1 or 2 hot-swap PSUs, both identical; each PSU has one or two integral fans
Connectors: PSUs up to 1800 W have C14 inlets, 2400/2600 W have C20 inlets; -48 V DC uses a Weidmuller TOP 4GS/3 7.6 terminal
Cooling: 5 (one CPU) or 6 (two CPUs, or one CPU with mid/rear bays or Riser 3) hot-swap 60 mm fans, N+1; Standard single-rotor 17K RPM or Performance dual-rotor 21K RPM (cannot be mixed)
Liquid cooling: Optional Neptune Processor DWC open-loop module (CTO only; slot 6 unavailable, no CMA)

Ports

Front: 1 x USB 3.2 Gen 1 (5 Gb/s), 1 x USB 2.0 (XCC management); optional VGA and external diagnostics port on the left rack latch
Rear: 3 x USB 3.2 Gen 1, 1 x VGA, 1 x RJ-45 1 GbE XCC, NMI button; optional DB-9 serial (slot 3 or 6 bracket); optional second XCC port (OCP slot)
Internal: 1 x USB 3.2 Gen 1 (OS boot / ESXi), MicroSD slot for XCC
Note: Using the front VGA port disables the rear VGA port

Physical

Form factor: 2U rack
Dimensions: 445 mm W x 87 mm H x 766 mm D (17.5 x 3.4 x 30.1 in); 482 mm across the EIA flanges
Depth to PSU handle: 732 mm (PSUs up to 1100 W), 755 mm (1800 W) or 781 mm (2400 W) from the rack flange
Weight: 21.4 kg (47.2 lb) base, 38.8 kg (85.5 lb) maximum
Machine types: 7D75 (1-year warranty), 7D76 (3-year), 7D77 (SAP HANA)
Environment: ASHRAE A2 10-35 °C with most configurations; A3 (40 °C), A4 (45 °C) and H1 (25 °C) depending on configuration; max altitude 3,050 m

Management

BMC: XClarity Controller 2 (ASPEED AST2600); optional XCC2 Platinum adds remote KVM, virtual media, boot capture, power capping, System Guard, CNSA/FIPS 140-3 modes
Interfaces: IPMI 2.0 (IPMI-over-LAN disabled by default), SNMPv3, Redfish, CIM-XML, HTML5 web UI; 1 GbE dedicated RJ-45 port
Tools: XClarity Provisioning Manager (F1), XClarity One, XClarity Essentials, XClarity Integrators, XClarity Energy Manager, Lenovo Capacity Planner; XClarity One Mobile via the front USB management port
Local: Operator panel with status LEDs, light path diagnostics (DIMMs, drives, PSUs), optional Integrated Diagnostics Panel with LCD (8 or 16 x 2.5" configurations, CTO only), optional External Diagnostics Handset port, pull-out network information tag
Storage for XCC: MicroSD slot on the System I/O board (32/64 GB cards) for Remote Disc on Card (up to 4 GB) and firmware history; 100 MB without a card
Security: Root of Trust module with TPM 2.0 and Platform Firmware Resiliency (NIST SP 800-193), Secure Boot, power-on/admin passwords, chassis intrusion switch (optional), lockable front bezel (optional); Nationz TPM 2.0 in China
Warranty: 1 or 3 years CRU and onsite, 9x5 next business day (model dependent)
Announced: Product guide first published 2023-01-10; 5th Gen Xeon support added 2023-12-14

Operating systems

Windows: Windows Server 2019, 2022, 2025; Windows 10 (x64) and Windows 11
Red Hat: RHEL 8.6-8.10, 9.0-9.8, 10.0-10.2 (5th Gen CPUs: 8.8 and later, 9.2 and later)
SUSE: SLES 15 SP4-SP7 (SP5 and later with 5th Gen), SLES 15 Xen SP4/SP5, SLES 16
Ubuntu: 20.04, 22.04, 24.04 and 26.04 LTS
VMware: ESXi 7.0 U3, 8.0 and 8.0 U1 (4th Gen only), 8.0 U2, 8.0 U3, 9.0, 9.1; factory ESXi preload offered (not with an NVIDIA GPU)
Windows client: Windows 10/11 supported with a subset of adapters (base CTO models 7D76CTO3WW / 7D75CTO3WW); no Fibre Channel, InfiniBand/VPI or external storage adapters; Windows client licence not sold by Lenovo

Processors

Intel Xeon Bronze 3508U
Intel Xeon Silver 4509Y
Intel Xeon Silver 4510
Intel Xeon Silver 4510T
Intel Xeon Silver 4514Y
Intel Xeon Silver 4516Y+
Intel Xeon Gold 5512U
Intel Xeon Gold 5515+
Intel Xeon Gold 5520+
Intel Xeon Gold 6526Y
Intel Xeon Gold 6530
Intel Xeon Gold 6534
Intel Xeon Gold 6538N
Intel Xeon Gold 6538Y+
Intel Xeon Gold 6542Y
Intel Xeon Gold 6544Y
Intel Xeon Gold 6548N
Intel Xeon Gold 6548Y+
Intel Xeon Gold 6554S
Intel Xeon Gold 6558Q
Intel Xeon Platinum 8558
Intel Xeon Platinum 8558P
Intel Xeon Platinum 8558U
Intel Xeon Platinum 8562Y+
Intel Xeon Platinum 8568Y+
Intel Xeon Platinum 8570
Intel Xeon Platinum 8571N
Intel Xeon Platinum 8580
Intel Xeon Platinum 8581V
Intel Xeon Platinum 8592+
Intel Xeon Platinum 8592V
Intel Xeon Platinum 8593Q
Intel Xeon Bronze 3408U
Intel Xeon Silver 4410T
Intel Xeon Silver 4410Y
Intel Xeon Silver 4416+
Intel Xeon Gold 5411N
Intel Xeon Gold 5412U
Intel Xeon Gold 5415+
Intel Xeon Gold 5416S
Intel Xeon Gold 5418N
Intel Xeon Gold 5418Y
Intel Xeon Gold 5420+
Intel Xeon Gold 5423N
Intel Xeon Gold 5433N
Intel Xeon Gold 6403N
Intel Xeon Gold 6414U
Intel Xeon Gold 6416H
Intel Xeon Gold 6418H
Intel Xeon Gold 6421N
Intel Xeon Gold 6423N
Intel Xeon Gold 6426Y
Intel Xeon Gold 6428N
Intel Xeon Gold 6430
Intel Xeon Gold 6433N
Intel Xeon Gold 6434
Intel Xeon Gold 6434H
Intel Xeon Gold 6438M
Intel Xeon Gold 6438N
Intel Xeon Gold 6438Y+
Intel Xeon Gold 6442Y
Intel Xeon Gold 6443N
Intel Xeon Gold 6444Y
Intel Xeon Gold 6448H
Intel Xeon Gold 6448Y
Intel Xeon Gold 6454S
Intel Xeon Gold 6458Q
Intel Xeon Platinum 8444H
Intel Xeon Platinum 8450H
Intel Xeon Platinum 8452Y
Intel Xeon Platinum 8454H
Intel Xeon Platinum 8458P
Intel Xeon Platinum 8460H
Intel Xeon Platinum 8460Y+
Intel Xeon Platinum 8461V
Intel Xeon Platinum 8462Y+
Intel Xeon Platinum 8468
Intel Xeon Platinum 8468H
Intel Xeon Platinum 8468V
Intel Xeon Platinum 8470
Intel Xeon Platinum 8470N
Intel Xeon Platinum 8470Q
Intel Xeon Platinum 8471N
Intel Xeon Platinum 8480+
Intel Xeon Platinum 8480CL
Intel Xeon Platinum 8490H