Dell PowerEdge M420 Owner's Manual page 44

Memory bus operating frequency can be 1600 MT/s or 1333 MT/s depending on:
• DIMM configuration (number of ranks)
• maximum frequency of the DIMMs
• DIMM operating voltage
• system profile selected (for example, Performance Optimized, Custom, or Dense Configuration Optimized)
• maximum supported DIMM frequency of the processors
The following table shows the memory populations and operating frequencies for the supported configurations.
DIMM Type
RDIMM
RDIMM
The system contains six memory sockets split into two sets of three sockets, one set per processor. Each three-socket
set is organized into three channels.
NOTE: DIMMs in sockets A1 to A3 are assigned to processor 1 and DIMMs in sockets B1 to B3 are assigned to
processor 2.
Figure 19. Memory Socket Locations
Memory channels are organized as follows:
Processor 1
Processor 2
44
Downloaded from www.Manualslib.com
DIMMs Populated/
Channel
1.5 V
1 1600 and 1333
1
channel 1: memory socket A1
channel 2: memory socket A2
channel 3: memory socket A3
channel 1: memory socket B1
channel 2: memory socket B2
channel 3: memory socket B3
manuals search engine
Operating Frequency (in MT/s)
1.35 V
1333
- 1333
Maximum DIMM Rank/
Channel
Dual rank
Quad rank