Dell PowerEdge M820 Systems Техническое руководство - Страница 19

Memory speed

The M820 server 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 M820, based on the

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

DIMM

DIMM 0

type

RDIMM

LRDIMM

*Although the M820 supports DIMM speeds of 800MT/s and 1066MT/s, you can only purchase this system with DIMM

speeds of 1333MT/s and 1600MT/s on Dell.com/PowerEdge.

RAS features help keep the system online and operational without significant impact to performance,

and can decrease data loss and crashing due to errors. RAS aids in rapid, accurate diagnosis of faults

that require service. Table 9 describes the memory RAS features supported on the M820.

PowerEdge M820 Technical Guide

Table 8.

Memory speed capabilities

Number

DIMM 1

DIMM 2

DIMMs

Speed (MT/s)

800*

1066*

∞

1333

1600

∞