Lenovo ThinkSystem SR665

Lenovo's 2-socket 2U rack server (machine types 7D2V/7D2W) for AMD EPYC 7002 "Rome" and 7003 "Milan"/"Milan-X" processors up to 64 cores and 280 W, with 32 DDR4-3200 DIMM slots (up to 8 TB), up to 40 x 2.5-inch or 20 x 3.5-inch drives across front, mid and rear bays, up to eight PCIe 4.0 slots plus OCP 3.0, and up to three double-wide GPUs. Aimed at virtualization, VDI, HPC, hyperconverged and inference workloads.

Memory

Slots: 32 DIMM (16 per processor; 8 channels per CPU, 2 DIMMs per channel)
Types: Lenovo TruDDR4 RDIMM (16, 32, 64 GB), 3DS RDIMM (128, 256 GB) and Performance+ RDIMM (32, 64 GB); no mixing of RDIMM with 3DS RDIMM, or Performance+ with standard DIMMs
Speed: RDIMM 3200 MHz at 1 DPC / 2933 MHz at 2 DPC; 3DS RDIMM 2933 / 2666 MHz; Performance+ RDIMM 3200 MHz at both 1 and 2 DPC
Max: 8 TB (32 x 256 GB 3DS RDIMM); 2 TB with one processor
Population: Best performance with 8 or 16 DIMMs per processor (all channels used); at most two DIMM capacities per processor
Persistent memory: Not supported
Protection: ECC, SDDC (x4 DIMMs), Patrol/Demand Scrubbing, DRAM Address Command Parity with Replay, DRAM Uncorrected ECC Error Retry, Post Package Repair; no mirroring or rank sparing

Storage

Front 2.5": 8, 16 or 24 x 2.5" in SAS/SATA, NVMe and AnyBay combinations (8-bay backplanes: 8x SAS/SATA, 8x AnyBay, 8x NVMe)
Front 3.5": 8 x 3.5" SAS/SATA, 12 x 3.5" SAS/SATA or 12 x 3.5" AnyBay
Mid-chassis: 4 x 3.5" SAS/SATA, 8 x 2.5" SAS/SATA or 8 x 2.5" NVMe (hot-swap, reached through the top cover; needs two CPUs and risers 1 and 2)
Rear: 2 or 4 x 3.5" SAS/SATA, or 4 or 8 x 2.5" SAS/SATA; plus 2 x 7mm SATA or NVMe (Marvell RAID) in place of slot 3 or slot 6
NVMe: Up to 16 NVMe drives direct 1:1, up to 32 with 1:2 oversubscription via NVMe switch adapters; up to 12 NVMe in 3.5" configurations
Capacity: Up to 1966.08 TB (32 x 61.44 TB NVMe SSD) or 440 TB (20 x 22 TB 3.5" HDD)
Controllers: Onboard SATA (up to 12 drives, JBOD only), onboard NVMe, 1610-8P / 1611-8P NVMe switch and 4-port retimer, RAID 530/540/930/940/5350/9350 8i-32i (940-32i up to 8 GB flash; 940 Tri-Mode for U.3), 430/440/4350 HBAs, 48-port internal SAS expander
Internal RAID bay: With 2.5" front bays, a cabled internal RAID 940-16i, 9350-8i/16i, 5350-8i or HBA 440-16i mounts behind the front bays without using a PCIe slot
M.2 boot: Internal M.2 module for 1 or 2 drives (on the air baffle, or on the mid-drive cage): SATA RAID (Marvell 88SE9230), NVMe RAID (Marvell 88NR2241) or SATA/NVMe non-RAID; 2242 to 22110
Optical: None internal; external USB DVD-RW option

Graphics

Onboard: Matrox G200 in the XClarity Controller, 16 MB, max 1920x1200 at 60 Hz
Double-wide GPUs: NVIDIA H100 80GB, L40 48GB, A100 80GB/40GB, A800 80GB (PRC), A40 48GB, A30 24GB, A16 64GB, Tesla V100S 32GB, V100 16GB, Quadro RTX 8000/6000 (special bid); up to 3 in slots 2, 5 and 7
Single-wide GPUs: NVIDIA L4, A2, T4, Quadro P620 (up to 8, slots 1-8); A10 24GB (up to 3, slots 1, 4, 7)
Rules: All GPUs identical; double-wide GPU blocks the adjacent slot 1, 4 or 8; no mid or rear drives with T4/V100/A100; only the P620 with 24 x 2.5" or 12 x 3.5" fronts; performance fans required, and since those fans were withdrawn GPUs can no longer be ordered CTO

Expansion

Slots 1-3: Riser 1 (CPU 1): PCIe 4.0 x16/x8/x8, x16/x16/empty, empty/x16/x16 or single x16; all full-height (PCIe 3.0 x16/x8/x8 riser also offered)
Slots 4-6: Riser 2 (CPU 2): same riser choices as riser 1, full-height
Slots 7-8: Riser 3 (cabled; slot 7 CPU 1, slot 8 CPU 2): PCIe 4.0 x16/x16 or x8/x8, full-height; mutually exclusive with onboard NVMe ports
OCP: Dedicated OCP 3.0 SFF slot, PCIe 4.0 x16
Slot layouts: 8 slots; 4 slots + 2 x 3.5" rear; 2 slots + 4 x 3.5" rear; 6 slots + 4 x 2.5" rear; 3 slots + 8 x 2.5" rear (7mm drives take one more slot)
Internal: Cabled PCIe 4.0 x8 connector for an internal RAID adapter/HBA (2.5" chassis only)
Serial: Optional DB-9 COM port bracket in slot 3 or slot 6

Networking

OCP 3.0: Optional 2- or 4-port adapters: 1 GbE (Broadcom 5719, Intel I350), 10GBASE-T (Broadcom 57416/57454, Intel X710-T2L/T4L, Marvell QL41132), 10/25 GbE SFP28 (Broadcom 57414/57454/57504, Intel E810-DA2/DA4, Marvell QL41232, Mellanox ConnectX-4 Lx / ConnectX-6 Lx); one port can be shared with the XCC
PCIe: 1/10/25 GbE, 100 GbE (Broadcom 57508, ConnectX-6 Dx), InfiniBand HDR100/HDR and NDR200/NDR 400 Gb (ConnectX-6, ConnectX-7), Xilinx Alveo U25/U50
Fibre Channel: Emulex LPe36002 64Gb, Emulex LPe35000/35002 32Gb, QLogic QLE2770/2772 32Gb, Emulex and QLogic 16Gb HBAs
Management: 1 x RJ-45 10/100/1000 Mb XClarity Controller port

Power

PSU options: 500 W, 750 W, 1100 W Platinum (115/230 V), 1800 W Platinum (230 V), 750 W, 1100 W, 1800 W, 2600 W Titanium (230 V), 1100 W -48 V DC
Redundancy: 1 or 2 hot-swap PSUs; both must be identical
Connector: C14 inlets on most AC units; the 2600 W Titanium uses C19-type cords; Weidmuller terminal on the -48 V DC unit
Input current: 100-127 V: 500 W 5.7 A, 750 W Platinum 8.4 A, 1100 W 12 A; 200-240 V: 500 W 2.7 A, 750 W 4.1 A, 1100 W 6 A, 1800 W 10 A
Cooling: 5 (one CPU) or 6 (two CPUs, or one CPU with mid/rear drives or riser 3) hot-swap 60 mm fans, N+1; standard single-rotor 17K RPM or performance dual-rotor 18K RPM; fans in each PSU
Heat output: 242 W (825 BTU/hr) minimum to 1675 W (5715 BTU/hr) maximum configuration

Ports

Front: 1 x USB 3.1 Gen 1, 1 x USB 2.0 (XClarity Controller management), external diagnostics handset port, optional VGA
Rear: 3 x USB 3.1 Gen 1, 1 x VGA, 1 x RJ-45 XCC management, NMI button; optional DB-9 serial (slot 3 or 6)
Internal: 1 x USB 3.2 Gen 1 (OS or licence key)

Physical

Form factor: 2U rack
Dimensions: 445 mm W x 87 mm H x 764 mm D (17.5 x 3.4 x 30.1 in); 482 mm across the rack flanges
Weight: Maximum 38.8 kg (85.5 lb)
Machine types: 7D2V (3-year warranty), 7D2W (1-year warranty)
Environment: ASHRAE A2 (10-35 C) for most configurations; A3/A4 only without GPUs, ConnectX-6, CPUs of 170 W or more, NVMe add-in cards or 128 GB+ 3DS RDIMMs
Acoustics: Idle 43 dBA typical; operating 46 dBA typical, 56 dBA storage-rich, 68 dBA GPU-rich

Management

BMC: Lenovo XClarity Controller (Pilot4 XE401, dual-core ARM Cortex A9); Standard, Advanced (remote KVM up to 1600x1200) or Enterprise (virtual media, boot capture)
Interfaces: IPMI 2.0 (IPMI-over-LAN off by default), SNMPv3, CIM-XML, REST, Redfish, HTML5 web UI; dedicated 1 GbE RJ-45 port, or NC-SI shared on an OCP port
Software: XClarity Provisioning Manager (F1), Administrator, Integrators, Essentials, Energy Manager, Capacity Planner; XClarity Mobile via the front USB management port
Security: TPM 2.0 (TPM 1.2 also with EPYC 7002; Nationz TPM 2.0 in China), AMD Platform Secure Boot, UEFI Secure Boot, Platform Firmware Resiliency (NIST SP 800-193), NIST SP 800-147B, intrusion switch, optional lockable bezel
Local: Front operator panel; optional pull-out Integrated Diagnostics Panel (LCD) on 8 or 16 x 2.5" fronts (CTO only); External Diagnostics Handset port; light path LEDs for CPUs, DIMMs, drives, fans and PSUs
Announced: Product guide first published 2020-05-05
Withdrawn: Withdrawn from marketing (Lenovo Press update of 2026-04-21)

Operating systems

Windows: Windows Server 2016, 2019, 2022; 2025 with EPYC 7003 only
Linux: RHEL 8.3-8.10, 9.0-9.8, 10.0-10.2 (EPYC 7002 also RHEL 7.6-7.9, 8.1, 8.2); SLES 12 SP5, 15 SP2-SP7 (SP1 on EPYC 7002), 16; Ubuntu 22.04, 24.04, 26.04 LTS
VMware: ESXi 6.7 U3, 7.0 (EPYC 7002) / 7.0 U1-U3, 8.0-8.0 U3, 9.0, 9.1; factory ESXi preload available (not with NVIDIA GPUs)

Processors

AMD EPYC 7203
AMD EPYC 7203P
AMD EPYC 72F3
AMD EPYC 7303
AMD EPYC 7303P
AMD EPYC 7313
AMD EPYC 7313P
AMD EPYC 7343
AMD EPYC 73F3
AMD EPYC 7413
AMD EPYC 7443
AMD EPYC 7443P
AMD EPYC 7453
AMD EPYC 74F3
AMD EPYC 7513
AMD EPYC 7543
AMD EPYC 7543P
AMD EPYC 75F3
AMD EPYC 7643
AMD EPYC 7643P
AMD EPYC 7663
AMD EPYC 7663P
AMD EPYC 7713
AMD EPYC 7713P
AMD EPYC 7763
AMD EPYC 7373X
AMD EPYC 7473X
AMD EPYC 7573X
AMD EPYC 7773X
AMD EPYC 7232P
AMD EPYC 7252
AMD EPYC 7262
AMD EPYC 7F32
AMD EPYC 7272
AMD EPYC 7282
AMD EPYC 7302
AMD EPYC 7302P
AMD EPYC 7F52
AMD EPYC 7352
AMD EPYC 7402
AMD EPYC 7402P
AMD EPYC 7F72
AMD EPYC 7452
AMD EPYC 7502
AMD EPYC 7502P
AMD EPYC 7532
AMD EPYC 7542
AMD EPYC 7552
AMD EPYC 7642
AMD EPYC 7662
AMD EPYC 7702
AMD EPYC 7702P
AMD EPYC 7742
AMD EPYC 7H12