Memory; Supported Memory; Table 6. Memory Technologies Supported - Dell PowerEdge M420 Technical Manual

5 Memory

More memory options are available than ever before with the Dell PowerEdge M420 — greater
capacities, higher frequencies and more flexibility. The M420 supports up to 192GB of memory
using up to six DIMMs in a dual-processor configuration, and speeds up to 1600MT/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 that require service,
increasing your memory reliability. System uptime is reinforced with RAS features like memory
mirroring, sparing and many others.
The M420 supports unbuffered DIMM (UDIMM) and registered DIMM (RDIMM) technology.

Supported memory

Table 6 lists the memory technologies supported by the M420.
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 M420 supports DIMM speeds lower than 1333MT/s, you can purchase this system with DIMM
speeds of 1333MT/s and 1600MT/s only on Dell.com/PowerEdge.
PowerEdge M420 Technical Guide
18
Table 6. Memory technologies supported
UDIMM
No
No
1600MT/s
2
4GB
1
x8
Yes
Yes
Yes (with advanced ECC
mode)
Yes
RDIMM
Yes
No
1333 or 1600MT/s
1, 2 or 4
2, 4, 8, 16 or 32GB
1
x4 or x8
Yes
Yes
Yes
Yes