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SUPERSERVER
LRDIMM Support on the Intel E5-2600 Series Processor Platform
DIMMs Populated
per DDR Channel
1
2
Other Notes and Restrictions
•
For the memory modules to work properly, please install DIMM modules in pairs
(with even number of DIMMs installed).
•
All channels in a system will run at the fastest common frequency.
•
Due to memory allocation to system devices, the amount of memory that
remains available for operational use will be reduced when 4 GB of RAM is
used. The reduction in memory availability is disproportional. See the following
table for details.
Possible System Memory Allocation & Availability
System Device
Firmware Hub fl ash memory (System BIOS)
Local APIC
Area Reserved for the chipset
I/O APIC (4 Kbytes)
PCI Enumeration Area 1
PCI Express (256 MB)
PCI Enumeration Area 2 (if needed) -Aligned on
256-M boundary-
VGA Memory
TSEG
Memory available for the OS & other applications
1027R-WRF USER'S MANUAL
LRDIMM Type
(Load Reduced
DIMM)
LR ECC DDR3
LR ECC DDR3
POR Speeds (in
MHz)
1066, 1333
1066, 1333
Size
Physical Memory Available
(4 GB Total System Memory)
1 MB
3.99 GB
4 KB
3.99 GB
2 MB
3.99 GB
4 KB
3.99 GB
256 MB
3.76 GB
256 MB
3.51 GB
512 MB
3.01 GB
16 MB
2.85 GB
1 MB
2.84 GB
2.84 GB
5-12
Ranks per DIMM
(Any Combination)
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