Dell PowerEdge M420 Technical Manual page 18

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 6 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.
Table 6 lists the memory technologies supported by the M420.
Feature
*Although the M420 supports DIMM speeds of 800MT/s and 1066MT/s, you can only purchase this system with
DIMM speeds of 1333MT/s and 1600MT/s on Dell.com.
PowerEdge M420 Technical Guide
18
UDIMM
No
No
800, 1066, 1333 or
1600MT/s
2
4GB
1
x8
Yes
Yes
Yes (with advanced ECC
mode)
Yes
RDIMM
Yes
No
800, 1066, 1333 or
1600MT/s
1, 2, or 4
2, 4, 8, 16, or 32GB
1
x4 or x8
Yes
Yes
Yes
Yes