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X7DWE User's Manual
2-3
Memory Installation
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
1.
Insert the desired number of DIMMs into the memory slots, starting with
DIMM #1A. The memory scheme is interleaved, so you must install (a) pair(s)
of modules of the same type and same speed at a time, beginning with Bank
1, Bank 2 and so on. For optimal memory performance, please install two
modules at a time with the maximum of 4 modules as shown in the Table
below. (Refer to our website for additional memory information.)
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 incor-
rectly. Gently press down on the DIMM module until it snaps into place in the
slot. Repeat for all modules.
DIMM Installation for Optimized Performance
# of DIMMs
Bank 1
2 DIMMs
1A
4 DIMMs
1A
Notes: i. DIMM slot# specified: DIMM slot to be populated; "---": DIMM slot
not to be populated. ii. FBD 533 MHz, 667MHz and 800MHz 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. For optimal memory performance,
please install pairs of memory modules in both Bank 1 and Bank 2. iv. For
memory to work properly, you need to follow the restrictions listed above.
Memory Support
The X7DWE supports up to 32 GB fully buffered (FBD) ECC DDR 2 800/667/533
in 4 DIMMs. Please note that DDR2 FBD 800 MHz memory is supported by the
processors with FSB 1333 MHz and 1066 MHz; however, it will run @667 MHz.
Note 1: Due to OS limitations, some operating systems may not show
more than 4 GB of memory.
Note 2: Different types of memory modules are supported by processors
with different front side bus speeds. Refer to the Table below.
FSB:
CPU
1600 MHz
DIMM
Supported
800 MHz
Supported
667 MHz
Not Supported
533 MHz
CAUTION
Bank 2
2A
1B
2A
DIMM Modules Supported by CPUs
FSB:
1333 MHz
Supported, but runs @ 667MHz
Supported
Supported
2-6
2B
FSB:
1066 MHz
Supported, but runs @ 667MHz
Supported
Supported
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