Configure your own Dell PowerEdge R420 server using our custom tools. There are two different Dell PowerEdge R420 server sizes. Choose either the 8 x 2.5" SAS/SATA/SSD drives or 4 x 3.5" SAS/SATA/SSD drives. Using the Intel Xeon E5-2400 processors with up to 8 cores per processor, the refurbished PowerEdge R420 server replaces the Dell R410 server. The Dell R420 server takes up to 192GB DDR3 with speeds up to 1600MT/s. All of our servers come with a one year hardware warranty.