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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
Frequencies
Ranks supported
Capacity per DIMM
Maximum DIMMS per
channel
DRAM technology
Temperature sensor
ECC
SDDC
Address parity
PowerEdge R720 and R720xd Technical Guide
21
UDIMM
RDIMM
No
Yes
No
No
800, 1066, 1333, or
800, 1066, 1333, or
1600MT/s
1600MT/s
1 or 2
1, 2, or 4
2 or 4GB
2, 4, 8, 16, or 32GB
2
3
x8
x4 or x8
Yes
Yes
Yes
Yes
Yes (with advanced
Yes
ECC mode)
Yes
Yes
LRDIMM
Yes
Yes
1066 or 1333MT/s
4
32GB
3
x4
Yes
Yes
Yes
Yes
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