Dell PowerEdge M520 (for PE VRTX) - Manual (Page 31)

• 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 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
RDIMM 1 1600, 1333, 1066 and 800
1333 1333, 1066 and 800
1066 Dual rank
Quad rank
2 1600, 1333, and 1066
1066 1333 and 1066
1066 Dual rank
Quad rank
The system contains 12 memory sockets split into two sets of six sockets, one set per processor. Each six-socket set is
organized into three channels. In each channel, the release levers of the first socket is marked white and the second
black.
NOTE: DIMMs in sockets A1 to A6 are assigned to processor 1 and DIMMs in sockets B1 to B6 are assigned to
processor 2.
Figure 9. Memory Socket Locations
Memory channels are organized as follows:
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