Memory; Supported Memory; Table 8. Memory Technologies Supported - Dell PowerEdge R620 Technical Manual

5 Memory

More memory options are available than ever before with the Dell PowerEdge R620 — greater
capacities, higher frequencies and more flexibility. The R620 supports up to 768GB of memory
(24 DIMMs) and speeds up to 1866MT/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 (UDIMM) and registered DIMMs (RDIMM), the
R620 supports load-reduced DIMMs (LRDIMMs), which use a buffer to reduce memory loading and
provide greater density, allowing for the maximum platform memory capacity.

Supported memory

Table 8 lists the memory technologies supported by the R620.
Feature
Register
Buffer
Frequencies*
Ranks supported
Capacity per DIMM
Maximum DIMMs per channel
DRAM technology
Temperature sensor
Error Correction Code (ECC)
Single Device Disable Code
(SDDC)
Address parity
*Although the R720 and R720xd support DIMM speeds lower than 1600MT/s, you can only purchase these systems
with DIMM speeds of 1600MT/s and 1866MT/s on Dell.com/PowerEdge.
19 PowerEdge R620 Technical Guide
Table 8. Memory technologies supported
UDIMM
No
No
1600MT/s
1
4GB
2
x8
Yes
Yes
Yes (with advanced
ECC mode)
Yes
RDIMM
Yes
No
1333, 1600 or 1866MT/s
1, 2 or 4
4, 8, 16, or 32GB
3
x4 or x8
Yes
Yes
Yes
Yes
LRDIMM
Yes
Yes
1600 or 1866MT/s
4
32GB
3
x4
Yes
Yes
Yes
Yes