The Lenovo ThinkSystem SR650 V4 is a 2U dual-socket rack server, though this particular listing specifies just a single Intel Xeon 6517P (16-core) processor rather than the dual-CPU builds seen elsewhere in this catalog, paired with four 32GB memory modules for 128GB of RAM. A single-socket configuration in a dual-socket-capable chassis is a common way to reduce cost for workloads that don't need the second CPU's throughput, while leaving the option to add a second processor and more memory later as needs grow. Suited to general-purpose application or file-server duty rather than the most CPU- or memory-intensive workloads.