Lenovo ThinkSystem SR645 7D2X - Server - rack-mountable - 1U - 2-way - 1 x EPYC 7262 / 3.2 GHz - RAM 16 GB - no HDD - Matrox G200 - no OS - monitor: none. A 2S/1U rack server powered by two AMD EPYC 7003 series CPUs, the ThinkSystem SR645 features standout 1U configuration flexibility to handle critical hybrid data center workloads such as virtualization and database.