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Lenovo ThinkSystem SR655 V3

CurrentServers2U rack
Lenovo ThinkSystem SR655 V32U rack24 × SFF 2.5" bays

The Lenovo ThinkSystem SR655 V3 is an enterprise 2U single-socket server powered by AMD EPYC 9004 Series processors. Designed for intensive data analytics, AI inference, and cloud service providers, it integrates up to 128 cores, PCIe 5.0 infrastructure, and high storage capacity with reduced hypervisor licensing overhead.

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Specifications

BrandLenovo
FamilyThinkSystem SR
Form factor2U rack
ReleasedMay 2023
ProcessorSingle AMD EPYC 9004 series processor up to 128 cores (up to 360W TDP)
Memory12x DDR5 DIMM slots (1 DPC) supporting up to 1.5TB DDR5-4800 ECC RDIMM
Drive baysUp to 24x 2.5-inch or 12x 3.5-inch drive bays; supports up to 24x NVMe Gen5 U.2/U.3 or E3.S drives
Expansion slotsUp to 8x PCIe 5.0 slots plus 1x OCP 3.0 mezzanine slot
NetworkOCP 3.0 slot supporting dual or quad 10/25/100GbE adapters
Power supplyDual redundant hot-swap 750W, 1100W, or 1800W Platinum/Titanium PSUs
ManagementLenovo XClarity Controller 2 (XCC2)

Generations

Compatible parts

SSDs

Works together

How the Lenovo ThinkSystem SR655 V3 connects to servers, storage and the network: 4 ways, with the parts and products on each path.

Fibre Channel SANiSCSI and NVMe/TCP over EthernetDirect-attached SASFile storage (NFS and SMB)

Fibre Channel SAN

Match the speed: 16Gb and 32Gb FC HBAs, switches and array ports work together, and each generation also runs one or two speeds below its own (a 32Gb port runs at 16Gb and 8Gb).

Adapters for the server (check the fit list)

Switches

Storage

Optics

Fibre Channel SAN: how it fits together

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Adapters for the server (check the fit list)

Switches

Storage

Optics

iSCSI and NVMe/TCP over Ethernet: how it fits together

Direct-attached SAS

12Gb SAS uses Mini-SAS HD (SFF-8644) connectors; older 6Gb gear uses Mini-SAS (SFF-8088). Adapter cables exist, but the link runs at the slower speed.

Adapters for the server (check the fit list)

Storage

Direct-attached SAS: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Adapters for the server (check the fit list)

Switches

Storage

Optics

File storage (NFS and SMB): how it fits together

Plan and size it

Check compatibility with Lenovo

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Lenovo has tested with the Lenovo ThinkSystem SR655 V3.

Equivalent models from other brands

FAQ

Does the SR655 V3 support EDSFF drive form factors?

Yes, it supports E3.S PCIe 5.0 NVMe solid-state drives in designated front drive cages.

What GPU configurations are supported in SR655 V3?

It supports up to 3 double-wide high-performance GPUs (up to 350W each) or up to 8 single-wide accelerator cards.

Buying or selling ThinkSystem SR655 V3?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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Sources