Dell PowerEdge R720 Technical Guide - Page 21

More memory options are available than ever before with the Dell™ PowerEdge™ R720 and R720xd-greater capacities, higher frequencies, and more flexibility. The R720 and R720xd support up to 768GB of memory (24 DIMMs) and speeds up to 1600 MT/s, providing high performance in a variety of applications. High memory density means there is no compromise when it comes to virtualization. Increase your uptime and reduce data loss, due to Dell's focus on reliability, availability, and serviceability (RAS) features. RAS aids in the rapid and accurate diagnosis of faults which require service, increasing your memory reliability. System uptime is reinforced with RAS features like memory mirroring, sparing, and many others. In addition to supporting existing unbuffered DIMMs (UDIMMs) and registered DIMMs (RDIMMs), the R720 and R720xd support load reduced DIMMs (LRDIMMs), which use a buffer to reduce memory loading and provide greater density, allowing for the maximum platform memory capacity. Table 7 lists the memory technologies supported by the R720 and R720xd. Feature Register Buffer UDIMM No No RDIMM Yes No Frequencies 800, 1066, 1333, or 1600MT/s 800, 1066, 1333, or 1600MT/s Ranks supported Capacity per DIMM 1 or 2 2 or 4GB 1, 2, or 4 2, 4, 8, 16, or 32GB Maximum DIMMS per channel 2 3 DRAM technology x8 Temperature sensor Yes ECC Yes x4 or x8 Yes Yes SDDC Yes (with advanced ECC mode) Yes Address parity Yes Yes LRDIMM Yes Yes 1066 or 1333MT/s 4 32GB 3 x4 Yes Yes Yes Yes 21 PowerEdge R720 and R720xd Technical Guide