Dell QHB owner manual Processor, Memory Socket Locations

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

•DIMM configuration (number of ranks)

•maximum frequency of the DIMMs

•DIMM operating voltage

•system profile selected (for example, Performance Optimized, Custom, or Dense Configuration Optimized)

•maximum supported DIMM frequency of the processors

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
RDIMM	1	1600 and 1333	1333	Dual rank
RDIMM	1	-	1333	Quad rank

The system contains six memory sockets split into two sets of three sockets, one set per processor. Each three-socket set is organized into three channels.

NOTE: DIMMs in sockets A1 to A3 are assigned to processor 1 and DIMMs in sockets B1 to B3 are assigned to processor 2.

Figure 19. Memory Socket Locations

Memory channels are organized as follows:

Processor 1	channel 1: memory socket A1
	channel 2: memory socket A2
	channel 3: memory socket A3
Processor 2	channel 1: memory socket B1
	channel 2: memory socket B2
	channel 3: memory socket B3

44