Dell PowerEdge M620 Systems (For Dell PowerEdge VRTX Enclosure) Owner's Manual

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System Memory

Your system supports DDR3 unbuffered ECC DIMMs (UDIMM ECC) and registered DIMMs (RDIMMs). It supports DDR3 and DDR3L voltage specifications.

NOTE: MT/s indicates DIMM speed in MegaTransfers per second.

Memory bus operating frequency can be 1600 MT/s, 1333 MT/s, 1066 MT/s, or 800 MT/s depending on:

DIMM type (UDIMM, RDIMM, or LRDIMM)
DIMM configuration (number of ranks)
maximum frequency of the DIMMs
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 processors

The system contains 24 memory sockets split into two sets of 12 sockets, one set per processor. Each 12-socket set is organized into four channels. In each channel, the release levers of the first socket are marked white, the second socket black, and the third socket green.

NOTE: DIMMs in sockets A1 to A12 are assigned to processor 1 and DIMMs in sockets B1 to B12 are assigned to processor 2.

The following table shows the memory populations and operating frequencies for the supported configurations.

Processor Type	DIMM Type	DIMMs Populated/Channel	Operating Frequency (in MT/s)		Maximum DIMM Rank/Channel
			1.5 V	1.35 V
Intel Xeon Processor E5–2600	UDIMM ECC	1	1333, 1066, and 800	1333, 1066, and 800	Dual rank
	UDIMM ECC	2	1333, 1066 and 800	1333, 1066, and 800	Dual rank
	RDIMM	1	1600, 1333, 1066, and 800 1333, 1066, and 800	1333, 1066, and 800 1066 and 800	Dual rank Quad rank
		2	1600, 1333, 1066, and 800 1066 and 800	1333, 1066, and 800 1066 and 800	Dual rank Quad rank
		3	1333, 1066, and 800	1066 and 800	Dual rank
	LRDIMM	1	1333 and 1066	1333 and 1066	Quad rank
		2	1333 and 1066	1333 and 1066	Quad rank
		3	1066	1066	Quad rank
Intel Xeon Processor E5–2600v2	UDIMM ECC	1	1600, 1333, and 1066	1600, 1333, and 1066	Dual rank
	UDIMM ECC	2	1600, 1333, and 1066	1600, 1333, and 1066	Dual rank
	RDIMM	1	1866, 1600, 1333, and 1066 1333, 1066, and 800	1600, 1333, and 1066 1066 and 800	Dual rank Quad rank
		2	1866, 1600, 1333, and 1066 1066 and 800	1600, 1333, and 1066 1066 and 800	Dual rank Quad rank
		3	1333 and 1066	1066	Dual rank
	LRDIMM	1	1866, 1600, 1333, and 1066	1600, 1333, and 1066	Quad rank
		1	1600, 1333, and 1066		Octal rank
		2	1600, 1333, and 1066	1600, 1333, and 1066	Quad rank
		2	1600, 1333, and 1066		Octal rank
		3	1333 and 1066	1066	Quad rank
		3	1066		Octal rank

Figure 1. Memory Socket Locations The figure shows system memory locations.

Memory channels are organized as follows:

Processor 1: channel 0: memory sockets A2, A6, and A10; channel 1: memory sockets A1, A5, and A9; channel 2: memory sockets A4, A8, and A12; channel 3: memory sockets A3, A7, and A11
Processor 2: channel 0: memory sockets B2, B6, and B10; channel 1: memory sockets B1, B5, and B9; channel 2: memory sockets B4, B8, and B12; channel 3: memory sockets B3, B7, and B11

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Dell PowerEdge M620 Systems (For Dell PowerEdge VRTX Enclosure) Owner's Manual

System Memory

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