8 PowerEdge R720 and R720xd Technical GuideCompared to the previous generation of Dell™ PowerEdge™ servers, the R720 and R720xd havemore drive bay options, more PCIe slots, a larger memory footprint, flexible I/O, Express Flash PCIesolid-state drives (available Q2 2012), advanced system management, and hot-plug redundantcooling. The R720 also supports optional dual internal RAID controllers and up to four optionalinternal GPUs.Table 2 lists the technical specifications for the PowerEdge R720 and R720xd systems. For the latestinformation on supported features, visit Dell.com.Feature SpecificationForm factor 2U rackProcessors Intel® Xeon® processor E5-2600 product familyProcessor sockets 2Front side bus (FSB) 2 Intel QuickPath Interconnect (QPI) links; 6.4 GT/s; 7.2 GT/s; 8.0 GT/sCache 2.5MB per core; core options: 2, 4, 6, 8Chipset Intel C600Memory1 Up to 768GB (24 DIMM slots): 2GB/4GB/8GB/16GB/32GB DDR3 up to 1600MT/sPCIe slotsR720:7 PCIe slots:One x16 full-length, full-heightThree x8 full-length, full-heightThree x8 half-length, half-heightR720xd:6 PCIe slots:Two x16 full-length, full-heightOne x8 full-length, full-heightThree x8 half-length, half-heightRAID controllerInternal controllers:PERC S110 (software RAID; R720 only)PERC H310PERC H710PERC H710PExternal HBAs (RAID):PERC H810External HBAs (non-RAID):6Gbps SAS HBAHard drives(hot-plug)R720 drive bay options: Up to 16 x 2.5“ Up to 8 x 2.5” + 8 x 2.5” (with dual RAID controllers) Up to 8 x 2.5” Up to 8 x 2.5” + 4 x 2.5” Express Flash2 or up to 8 x 3.5”R720xd drive bay options: Up to 24 x 2.5” (front) + 2 x 2.5” (back) or Up to 12 x 3.5” (front) + 2 x 2.5” (back)Hard drive options: 2.5” SAS SSD, SATA SSD, SAS (15K, 10K), nearline SAS (7.2K), SATA (7.2K) 2.5” Express Flash PCIe SSD2 (R720 only) 3.5” SAS (15K), nearline SAS (7.2K), SATA (7.2K)Self-encrypting drives (SEDs) available