Dell PowerEdge R940 — Full Technical Specifications

Four sockets change how the table should be read. The memory row is the reason the machine exists — the slot count is what you are paying for, and a configuration that leaves most of them empty has bought the wrong server. Check the processor row against that: the memory clock depends on the processor family, and on a machine with this many modules the difference compounds. The bay row is modest for the chassis size because storage is expected to be external, so read it alongside the external controller in the row below. Weight and depth in the last row rule out a fair number of cabinets.