Dell PowerEdge M620 Техническое руководство - Страница 18

Up to two quad-rank (QR) DIMMs and up to three dual-rank (DR) or single-rank (SR) DIMMs may



be populated per channel. Although an LRDIMM is physically a QR DIMM, logic on the LRDIMM

can make it appear as a DR DIMM to the system, allowing up to three LDRIMMs per channel.

DIMMs must be installed in each channel, starting with the DIMM farthest from the processor.



DIMMs should be installed with largest rank count to smallest. For example, if DR DIMMS are



mixed with SR DIMMs, DR DIMMS should be placed in the lowest DIMM slots, followed by the SR

DIMMs.

For more information on memory configuration and population, see the

Systems Owner's Manual

The M620 supports memory speeds of 1600MT/s, 1333MT/s, 1066MT/s, and 800MT/s depending on

the DIMM types installed and the configuration. All memory on all processors and channels run at

the same speed and voltage. By default, the system runs at the highest speed for the channel with

the lowest DIMM voltage and speed. The operating speed of the memory is also determined by the

maximum speed supported by the processor, the speed settings in the BIOS, and the operating

voltage of the system.

Table 8 lists the memory configuration and performance details for the M620, based on the

population of the number and type of DIMMs per memory channel.

on Support.Dell.com/Manuals.

Dell PowerEdge M620