Chapter 5: Advanced Serverboard Setup

5-9

Installing Memory Modules
Insert the desired number of DIMMs into the memory slots. The memory
scheme is interleaved, so you must install two modules at a time, beginning
with DIMM 1A and DIMM 1B, then DIMM 2A and DIMM 2B and fi nally DIMM
3A and DIMM 3B.
Insert each DIMM module vertically into its slot. Pay attention to the notch
along the bottom of the module to prevent inserting the DIMM module incor-
rectly.
Gently press down on the DIMM module until it snaps into place in the slot.
Repeat for all modules (see step 1 above).
Memory Support
The X7DCA-3/X7DCA-i supports up to 32 GB of registered ECC DDR2-667/533
in 6 slots. Populating slots wi th a pair (or pairs) of DIMMs of th e same type and
size will result in interleaved memory.
Notes: Due to OS limitations, som e operating systems may not show m ore than
4 GB of memory.
Due to memory allocation to system devices, memory remaining available for op-
erational use will be reduc ed when 4 GB of RAM is used. The r eduction in memory
availability is dispropo rtional. Refer to the table below for details.
1.
2.
3.
!
CAUTION! Exercise extreme care when installing or removing DIMM
modules to prevent any possible damage.
5-6 Installing Memory