Installing Dimms - Supermicro X7DAL-E User Manual

X7DAL-E User's Manual
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Installing DIMMs

Note: Check the Supermicro web site for recommended memory modules.
Exercise extreme care when installing or removing DIMM
modules to prevent any possible damage. Also note that the
memory is interleaved to improve performance (see step 1).
DIMM Installation (See the graphics on the next page.)
1. Insert the desired number of DIMMs into the memory slots, starting with DIMM
#1A. The memory scheme is interleaved, so you must install two modules at
a time, beginning with DIMM #1A, then DIMM #2A and so on. For optimal
performance, please install four modules at a time (4 modules maximum.)
(*See the Memory Installation Table Below.)
2. 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 incorrectly.
3. 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 X7DAL-E supports up to 24 GB fully buffered (FBD) ECC DDR2 667/533 in 6
DIMMs. Populating DIMM modules with pairs of memory modules of the same size
and same type will result in Interleaved Memory which will increase memory
performance.
Note 1: Due to OS limitations, some operating systems may not show more than 4
GB of memory. (See the DIMM Population Confi gurations Table below.)
Branch 1
Number of Bank 1
DIMMs (Channel 0)
2 DIMMs 1A
4 DIMMs 1A
6 DIMMs 1A
(*Notes: i. DIMM slot# specified: DIMM slot to be populated; "---": DIMM slot not to
be populated. ii. Both FBD 533 MHz and 667MHz DIMMs are supported; however,
you need to use the memory modules of the same speed and of the same type on a
motherboard. iii. Interleaved memory is supported when pairs of DIMM modules are
installed. To optimize memory performance, please install pairs of memory in both
Branch 1 and Branch 2. iv. For memory to work properly, you need to follow the
restrictions listed above. )
Note 2: Due to memory allocation to system devices, memory remaining avail-
able for operational use will be reduced when 4 GB of RAM is used. The reduction
in memory availability is disproportional. (Refer to the Memory Availability Table
below for details.)
CAUTION
Optimized DIMM Population Configurations
Bank 2
(Channel 1)
------ 2A ------
------ 2A ------
1B 2A 2B
2-6
Branch 2
Bank 3 Bank 4
(Channel 2) (Channel 3)
------ N/A ------
3A N/A 4A
3A N/A 4A
N/A
N/A
N/A