• number of DIMMs populated per channel
• DIMM operating voltage
• system profile selected (for example, Performance Optimized, Custom, or Dense Configuration Optimized)
• maximum supported DIMM frequency of the processor
The system contains six memory sockets organized into three channels. In each channel, the release levers of the first
socket are marked white and the second socket black.
Figure 35. Memory Socket Locations
Memory channels are organized as follows:
• channel 0: memory sockets A1 and A4
• channel 1: memory sockets A2 and A5
• channel 2: memory sockets A3 and A6
The following table shows the memory populations and operating frequencies for the supported configurations.
DIMM Type DIMMs
Populated/
Channel
Operating Frequency (in MT/s) Maximum DIMM Rank/
Channel
1.5 V 1.35 V
UDIMM ECC 1 1333, 1066, and 800 1333, 1066, and 800 Dual rank
2 1333, 1066, and 800 1333, 1066, and 800 Dual rank
74
