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HomeCatalogLenovo ThinkSystem SR650 — Full Technical Specifications

Technical specifications

Lenovo ThinkSystem SR650 — Full Technical Specifications

The SR650 is Lenovo's two-socket workhorse rack server from the Skylake and Cascade Lake years — the model that carried most of the company's enterprise volume in that period and the one its later generations are all measured against. It is a capable, unfussy machine with a deserved reputation for accepting accelerators that its competitors of the same vintage would not.

We list a new build and refurbished units.

Official datasheet

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Original spec sheet © Vendor. Hosted by hardwaresys for buyer reference. Specifications subject to vendor’s published documentation.

Full Specifications

The accelerator row on this sheet is longer than anything else in its generation, and that is the reason to pick this chassis over a contemporary: a rack server that takes several cards without special arrangements is still useful for work nobody had thought of when it was bought. Read the memory row carefully though, since the three module types quoted reach three different ceilings and the highest of them depends on a memory technology tied to a specific processor family. The bay row includes rear positions that are easy to overlook and useful for separating boot from data. Management is Lenovo's own controller, licensed in tiers — check which tier a unit carries.

CPU Sockets2
CPU FamilyIntel Xeon Scalable (1st Gen Skylake / 2nd Gen Cascade Lake), LGA 3647, up to 28 cores, up to 205W TDP
ChipsetIntel C624
Max RAM3 TB (RDIMM), 1.5 TB (LRDIMM), 6 TB (with DCPMM in Memory Mode)
DIMM Slots24 TruDDR4 (12 per CPU)
Memory TypeTruDDR4 2666/2933 MHz RDIMM, LRDIMM, 3DS RDIMM; DCPMM 128/256/512 GB
Drive BaysUp to 24 x 2.5" hot-swap SAS/SATA/NVMe, or up to 12 x 3.5" hot-swap SAS/SATA; rear: up to 2 x 3.5" SAS/SATA; M.2: up to 2
Storage ControllerRAID 530-8i/730-8i/930-8i/16i/940-8i/16i, HBA 430/440; Intel VROC for NVMe
NetworkLOM up to 4x 1/10 GbE; ML2 adapters 10/25 GbE; 1 GbE management port
PSUUp to 2x redundant hot-swap: 550W/750W/1100W AC 80 PLUS Platinum/Titanium
Form Factor2U rack-mount
ManagementLenovo XClarity Controller (Standard/Advanced/Enterprise), IPMI 2.0, Redfish
Dimensions482 x 86.5 x 763.7 mm (W x H x D) with rack latches
WeightUp to 32.0 kg
GPU SupportUp to 5 GPUs: NVIDIA T4, A2, P4, P6, P40, P100, V100, A100, A16, A30, RTX A6000 etc.
CoolingUp to 6 hot-swap dual-rotor fans (N+1 redundancy)
PCIe SlotsUp to 8 PCIe 3.0 slots (via risers) + 1 dedicated RAID slot
Operating EnvironmentASHRAE A2 (10-35°C)

Looking to buy this configuration?

We source this chassis OEM-new or refurbished, QC-inspected and shipped door-to-door. Quote-only pricing.

Every model · new & refurbished

Same 1-yr warranty, same QC