Owners Manual
Figure 35. Memory socket location on the processor expansion module
Memory channels are organized as follows:
Table 37. Memory channels
Processor Channel 0 Channel 1 Channel 2 Channel 3 Channel 4 Channel 5
Processor 1 Slots A1 and A7 Slots A2 and A8 Slots A3 and A9 Slots A4 and A10 Slots A5 and A11 Slots A6 and A12
Processor 2 Slots B1 and B7 Slots B2 and B8 Slots B3 and B9 Slots B4 and B10 Slots B5 and B11 Slots B6 and B12
Processor 3 Slots C1 and C7 Slots C2 and C8 Slots C3 and C9 Slots C4 and C10 Slots C5 and C11 Slots C6 and C12
Processor 4 Slots D1 and D7 Slots D2 and D8 Slots D3 and D9 Slots D4 and D10 Slots D5 and D11 Slots D6 and D12
General memory module installation guidelines
NOTE
: If your system's memory congurations fail to observe these guidelines, your system might not boot, might stop
responding during memory conguration, or might operate with reduced memory.
The system supports Flexible Memory Conguration, enabling the system to be congured and run in any valid chipset architectural
conguration. The following are the recommended guidelines for installing memory modules:
• RDIMMs and LRDIMMs must not be mixed.
• Up to two RDIMMs can be populated per channel regardless of rank count.
• Up to two LRDIMMs can be populated per channel regardless of rank count.
• If memory modules with dierent speeds are installed, they will operate at the speed of the slowest installed memory module(s) or
slower depending on the system DIMM conguration.
• Populate memory module sockets only if a processor is installed. For dual-processor systems, sockets A1 to A12 and sockets B1 to B12
are available. For quad-processor systems, sockets A1 to A12, B1 to B12, C1 to C12, and sockets D1 to D12 are available.
Installing and removing system components
77