General Memory Module Installation Guidelines - Dell PowerEdge T20 Owner's Manual

• DIMM operating voltage
• Maximum supported DIMM frequency of the processor
The system contains four memory sockets organized into two channels. In each channel, the release levers of the first
socket are marked white and the second socket black.
Figure 21. Memory Socket Locations
Memory channels are organized as follows:
• channel A: memory sockets 1 and 3
• channel B: memory sockets 2 and 4
The following table shows the memory populations and operating frequencies for the supported configurations.
DIMM Type DIMMs
Populated/
Channel
UDIMM ECC 2

General Memory Module Installation Guidelines

NOTE: Memory configurations that fail to observe these guidelines can prevent your system from booting, hanging
during memory configuration, or operating with reduced memory
NOTE: This system supports only UDIMMs.
The following are the recommended guidelines for best performance:
• A maximum of two UDIMMs can be populated in a channel.
Operating Frequency (in MT/s)
1.5 V
1333, 1600
1.35 V
1333, 1600
Maximum DIMM Rank/
Channel
Dual rank
47