Dell M620 owner manual System Memory, Installing The Cooling Shroud, Dimm Type

Installing The Cooling Shroud

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

1.Position the tabs below the shroud to align with the holes on the heat sink installed on processor socket CPU1.

2.Lower the cooling shroud into the system until the tabs on the sides of the shroud engage with the slots on the blade chassis and the pins under the shroud engage with the holes on the heat sink.

3.Close the blade.

4.Install the blade in the enclosure.

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.

DIMM Type	DIMMs Populated/	Operating Frequency (in MT/s)		Maximum DIMM Rank/
	Channel			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, 1066, and 800	Dual rank
		1333, 1066, and 800	1066 and 800	Quad rank
	2	1600, 1333, 1066, and 800	1333, 1066, and 800	Dual rank
		1066 and 800	1066 and 800	Quad rank
	3	1333, 1066, and 800	1066 and 800	Dual rank

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