Dell PowerEdge XE9780 Installation and Service Manual

PDF

System memory guidelines

The XE9780 supports up to 16 DIMMs per processor (up to 32 DIMMs in a dual- processor configuration). Each server has 8 memory channels per processor, with each channel supporting up to 2 DIMMs.

Your system memory is organized into eight channels per processor (two memory sockets per channel),16 memory sockets per processor and 32 memory sockets per system.

This image shows memory location PowerEdge XE9780 — Figure 1. Memory channels

Memory channels are organized as follows:

Table 1. Memory channelsThe table describes memory channels and how the channels are organized.
Processor	Channel A	Channel B	Channel C	Channel D	Channel E	Channel F	Channel G	Channel H
Processor 0	Slots A1 and A9	Slots A7 and A15	Slots A3 and A11	Slots A5 and A13	Slots A4 and A12	Slots A6 and A14	Slots A2 and A10	Slots A8 and A16
Processor 1	Slots B1 and B9	Slots B7 and B15	Slots B3 and B11	Slots B5 and B13	Slots B4 and B12	Slots B6 and B14	Slots B2 and B10	Slots B8 and B16

NOTE:The processor may reduce the performance of the rated DIMM speed.

NOTE:Maximum DIMM transfer speed support dependent on CPU SKU and DIMM population.