Dell PowerEdge R660 Installation and Service Manual

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Memory specifications

The PowerEdge R660 system supports the following memory specifications for optimized operation.

Table 1. Memory specifications for 4th Gen Intel® Xeon® Scalable or Intel® Xeon® Max ProcessorsThe table below shows the memory specifications:
DIMM type	DIMM rank	DIMM capacity	Single processor		Dual processors
DIMM type	DIMM rank	DIMM capacity	Minimum system capacity	Maximum system capacity	Minimum system capacity	Maximum system capacity
DDR5 RDIMM	Single rank	16 GB	16 GB	256 GB	32 GB	512 GB
	Dual rank	32 GB	32 GB	512 GB	64 GB	1 TB
	Dual rank	64 GB	64 GB	1 TB	128 GB	2 TB
	Quad rank	128 GB	128 GB	2 TB	256 GB	4 TB
	Octa rank	256 GB	256 GB	4 TB	512 GB	8 TB

Table 2. Memory module socketsThe table below shows the memory module sockets for the system:
Memory module sockets	Rated DIMM Speed
32 (288-pin)	4800 MT/s or 4400 MT/s

Table 3. Memory specifications for 5th Gen Intel® Xeon® Scalable ProcessorsThe table below shows the memory specifications:
DIMM type	DIMM rank	DIMM capacity	Single processor		Dual processors
DIMM type	DIMM rank	DIMM capacity	Minimum system capacity	Maximum system capacity	Minimum system capacity	Maximum system capacity
DDR5 RDIMM	Single rank	16 GB	16 GB	256 GB	32 GB	512 GB
	Dual rank	32 GB	32 GB	512 GB	64 GB	1 TB
	Dual rank	64 GB	64 GB	1 TB	128 GB	2 TB
	Dual rank	96 GB	96 GB	1.5 TB	192 GB	3 TB
	Quad rank	128 GB	128 GB	2 TB	256 GB	4 TB

Table 4. Memory module socketsThe table below shows the memory module sockets for the system:
Memory module sockets	Rated DIMM Speed
32 (288-pin)	5600 MT/s

NOTE:Memory DIMM slots are not hot pluggable.

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