Dell PowerEdge T320 Systems Owner's Manual

System Memory

Your system supports DDR3 unbuffered ECC DIMMs (ECC UDIMMs), 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 or RDIMM)
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 processor

The system contains six memory sockets organized into three channels. In each channel, the release levers of the first socket are marked white and the second socket black.

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

Memory channels are organized as follows:

channel 1: memory sockets A1 and A4
channel 2: memory sockets A2 and A5
channel 3: memory sockets A3 and A6

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

DIMM Type	DIMMs Populated/Channel	Operating Frequency (in MT/s)		Maximum DIMM Rank/Channel
		1.5 V	1.35 V
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	1333, 1066, and 800 1333, 1066, and 800	1333, 1066, and 800 1066 and 800	Dual rank Quad rank
RDIMM	2	1600, 1333, 1066, and 800 1066 and 800	1333, 1066, and 800 1066 and 800	Dual rank Quad rank

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Dell PowerEdge T320 Systems Owner's Manual

System Memory

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