Dell PowerEdge R640 4LFF 1x Xeon Gold 5218R 32GB DDR4 No Drive rack server

Dell PowerEdge R640 4LFF Xeon Gold 5218R

The Dell PowerEdge R640 is a 1U rack server built around a single Intel Xeon Gold 5218R processor running at 2.1 GHz with 20 cores and 27.5 MB cache. It ships with 32 GB of DDR4 ECC registered memory in a two-module configuration and includes a PERC H740P RAID controller with 16 GB cache. The 4LFF chassis supports up to four 3.5-inch SATA drives, though no drives are installed. Remote management is handled by iDRAC9 Enterprise, and dual 750 W power supplies provide redundancy.

Suits single-socket workloads needing room to grow

This configuration suits workloads that start with one processor but may scale to two, as the board supports a maximum of two CPUs. The eight DIMM slots per processor allow memory expansion up to 7.68 TB. Buyers who need both processor sockets populated from day one should look at a dual-socket build. The integrated graphics and 10 GbE 562T adapter cover basic display and networking needs without add-in cards.

4LFF chassis limits internal drives to four

The single specification that decides fit is the 4LFF chassis, which provides exactly four 3.5-inch drive bays connected through the SATA interface on the PERC H740P controller. If your storage plan requires more than four large-form-factor drives, or a different drive form factor, this chassis will not accommodate it. The 36 x 24 x 10 inch dimensions and 40 lb weight confirm a standard 1U rack footprint.