Dell PowerEdge M520 Manuel technique - Page 18

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Dell PowerEdge M520 Manuel technique
Table 7 lists the DIMMs that are supported on the M520. For the latest information on supported
memory, visit Dell.com.
Only
Capacity
(GB)
2
2
2
4
4
4
4
4
8
8
16
16
32
The M520 server supports flexible memory configurations ranging from capacities of 2GB to 768GB,
and up to 6 DIMMs per processor (up to 12 DIMMs in a dual-processor configuration). Each
processor has 4 memory channels, with each channel supporting up to 3 DIMMs.
The M520 supports a flexible memory configuration, according to the following basic rules:
Speed: If DIMMs of different speeds are mixed, all channels across all processors operate at the
slowest DIMM's common frequency.
DIMM type: Only one type of DIMM is allowed per system: UDIMM, RDIMM, or LRDIMM. These
types cannot be mixed.
The following additional memory-population guidelines also apply to the M520:
Up to two quad-rank (QR) DIMMs and up to three dual-rank (DR) or single-rank (SR) DIMMs may
be populated 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
PowerEdge M520 Technical Guide
18
Ranks
Speed
Type
(MT/s)
DIMM
1600
RDIMM
1333
RDIMM
1600
UDIMM
1333
RDIMM
1600
RDIMM
1333
RDIMM
1333
RDIMM
1600
UDIMM
1333
RDIMM
1600
RDIMM
1600
RDIMM
1333
RDIMM
1333
RDIMM
on Support.Dell.com/Manuals.
Data
per
SDDC support
width
1
x8
Advanced ECC
1
x8
Advanced ECC
1
x8
Advanced ECC
2
x8
Advanced ECC
2
x8
Advanced ECC
1
x4
All modes
2
x8
Advanced ECC
2
x8
Advanced ECC
2
x4
All modes
2
x4
All modes
2
x4
All modes
2
x4
All modes
4
x4
All modes
Voltage
1.35
1.35
1.35
1.35
1.35
1.35
1.35
1.35
1.35
1.35
1.35
1.35
1.35
Dell PowerEdge M520