Dell PowerEdge M620 Technical Guide - Page 17

Capacity, Speed, Ranks, width, SDDC support, Voltage

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Table 7 lists the DIMMs that are supported on the M620. For the latest information on supported memory, visit Dell.com. Only Capacity Speed (GB) (MT/s) Type Ranks per DIMM Data width SDDC support Voltage 2 1600 RDIMM 1 x8 Advanced ECC 1.35 2 1333 RDIMM 1 x8 Advanced ECC 1.35 2 1600 UDIMM 1 x8 Advanced ECC 1.35 4 1333 RDIMM 2 x8 Advanced ECC 1.35 4 1600 RDIMM 2 x8 Advanced ECC 1.35 4 1333 RDIMM 1 x4 All modes 1.35 4 1333 RDIMM 2 x8 Advanced ECC 1.35 4 1600 UDIMM 2 x8 Advanced ECC 1.35 8 1333 RDIMM 2 x4 All modes 1.35 8 1600 RDIMM 2 x4 All modes 1.35 16 1600 RDIMM 2 x4 All modes 1.35 16 1333 RDIMM 2 x4 All modes 1.35 32 1333 LRDIMM 4 x4 All modes 1.35 32 1333 RDIMM 4 x4 All modes 1.35 The M620 server supports flexible memory configurations ranging from capacities of 2GB to 768GB (using 32GB DIMMs), and up to 12 DIMMs per processor (up to 24 DIMMs in a dual-processor configuration). Each processor has 4 memory channels, with each channel supporting up to 3 DIMMs. The M620 is available in the following memory capacity options:  24-DIMM capacity: uses a 57mm heatsink and is recommended for use with processors of 95W or less  20-DIMM capacity: uses a 77mm heatsink for cooling efficiency and is recommended for use with 115W and 130W processors  16-DIMM capacity: uses a 97mm heatsink to support the higher ambient temperatures of fresh air configurations The M620 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 apply to the M620:

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Table 7 lists the DIMMs that are supported on the M620. For the latest information on supported
memory, visit
Dell.com
.
Only
Capacity
(GB)
Speed
(MT/s)
Type
Ranks
per
DIMM
Data
width
SDDC support
Voltage
2
1600
RDIMM
1
x8
Advanced ECC
1.35
2
1333
RDIMM
1
x8
Advanced ECC
1.35
2
1600
UDIMM
1
x8
Advanced ECC
1.35
4
1333
RDIMM
2
x8
Advanced ECC
1.35
4
1600
RDIMM
2
x8
Advanced ECC
1.35
4
1333
RDIMM
1
x4
All modes
1.35
4
1333
RDIMM
2
x8
Advanced ECC
1.35
4
1600
UDIMM
2
x8
Advanced ECC
1.35
8
1333
RDIMM
2
x4
All modes
1.35
8
1600
RDIMM
2
x4
All modes
1.35
16
1600
RDIMM
2
x4
All modes
1.35
16
1333
RDIMM
2
x4
All modes
1.35
32
1333
LRDIMM
4
x4
All modes
1.35
32
1333
RDIMM
4
x4
All modes
1.35
The M620 server supports flexible memory configurations ranging from capacities of 2GB to 768GB
(using 32GB DIMMs), and up to 12 DIMMs per processor (up to 24 DIMMs in a dual-processor
configuration). Each processor has 4 memory channels, with each channel supporting up to 3
DIMMs.
The M620 is available in the following memory capacity options:
24-DIMM capacity: uses a 57mm heatsink and is recommended for use with processors of 95W
or less
20-DIMM capacity:
uses a 77mm heatsink for cooling efficiency and is recommended for use
with 115W and 130W processors
16-DIMM capacity: uses a 97mm heatsink to support the higher ambient temperatures of fresh
air configurations
The M620 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 apply to the M620: