DELL PowerEdge R640 4LFF 1x Xeon Silver 4116 256GB DDR4 No Drive Rack Server

Dell PowerEdge R640 4LFF single-socket server

The Dell PowerEdge R640 4LFF is a 1U rack server equipped with one Intel Xeon Silver 4116 processor running at 2.1GHz with 12 cores and 16.5MB cache. It ships with 256GB of DDR4 ECC registered memory installed across sixteen 16GB modules and includes a Dell PERC H740P RAID controller. The chassis provides four 3.5-inch drive bays for SATA hard drives, though no drives are installed. Remote management is handled by iDRAC9 with an Enterprise licence, and networking features a 10GbE dual-port 562T adapter. Dual 750W power supplies provide redundancy.

Suited for memory-heavy workloads.

This server suits workloads that benefit from a large DDR4 footprint in a compact 1U form factor, such as virtualisation hosts or in-memory databases. The single Xeon Silver 4116 leaves the second CPU socket vacant, so the platform can scale to two processors and up to 7.68TB of memory when demand grows. Buyers who require dual-processor performance out of the box should look at a two-socket configuration instead. The four 3.5-inch bays limit internal drive count, so environments needing many local disks will need external storage.

Deciding specification: 256GB DDR4

The installed 256GB of DDR4 memory is the key figure that determines whether this unit matches the workload. With one Xeon Silver 4116 populated, the memory controllers are active for twelve channels, supporting the current capacity with headroom for expansion. If the application fits within 256GB today but may grow, the twelve free DIMM slots and second CPU socket provide a clear upgrade path. If the working set already exceeds 256GB, a higher-density or dual-CPU configuration should be considered from the start.