B-16
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Appendix B
Hardware Configuration
Memory Support
The NI RMC-8354 supports up to 16 GB of DDR3 ECC UDIMM (1333 MHz in 4 DIMM slots).
Populating these DIMM modules with a pair of memory modules of the same type and size
results in interleaved memory, which improves memory performance. Refer to the following
table for DIMM module support guidelines.
Note
For ECC UDIMMs, populate only slots 1A, 2A, 1B, and 2B. Refer to
Figure B-23 for slot and channel locations.
Memory Population Guidelines
Refer to the following table when populating the NI RMC-8354.
Note
For ECC UDIMMs, populate only slot 1 and/or slot 2 per channel. Refer to
Figure B-23 for slot and channel locations.
Note
Due to memory allocation to system devices, the amount of memory that
remains for operational use is reduced when you use 4 GB of RAM. The reduction in
memory availability is disproportional.
For Microsoft Windows users, Microsoft implemented a design change in
Windows XP with Service Pack 2 (SP2) and Windows Vista. This change is specific
to the Physical Address Extension (PAE) mode behavior, which improves driver
Table B-12.
DDR3 ECC/Unbuffered (UDIMM) Memory Support
ECC UDIMM
1 GB (x4 DRAM)
2 GB (x4 DRAM)
Single rank
Up to 4 GB
(4 × 1 GB DIMM modules)
Up to 8 GB
(4 × 2 GB DIMM modules)
Dual rank
Up to 8 GB
(4 × 2 GB DIMM modules)
Up to 16 GB
(4 × 4 GB DIMM modules)
Quad rank
Not supported
Not supported
Table B-13.
DDR3 ECC UDIMM Memory
DIMM Slots
per Channel
DIMMs
Populated
per Channel
DIMM Type
POR Speeds
Ranks per
DIMM (Any
Combination)
2
1
Unbuffered
DDR3 ECC
1066 and 1333
Single rank,
dual rank
2
2
Unbuffered
DDR3 ECC
1066 and 1333
Single rank,
dual rank
