SUPER MICRO Computer SUPER X7DB8 - Manual (Page 26)

2-6
X7DB8/X7DBE User's Manual
2-3 Installing DIMMs
Note: Check the Supermicro web site for recommended memory modules.
CAUTION
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 Figure 2-2)
1. Insert the desired number of DIMMs into the memory slots, starting with DIMM
#1A. The memory scheme is interleaved so you must install four modules at
a time, beginning with DIMM #1A, then DIMM #2A and so on. *For optimal
performance, please install four modules at a time up to 8 modules. (*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 X7DB8/X7DBE supports up to 16 GB (32 GB) fully buffered (FBD) ECC DDR2
533/667 in 8 DIMMs. Populating DIMM modules with pairs of memory modules
of the same size and same type will result in Interleaving Memory which will
increase memory performance.
*Note: Due to OS limitations, some operating systems may not show more than 4
GB of memory.
Optimized DIMM Population Configurations
Branch0 Branch1
Number of
DIMMs
Bank 1
(Channel 0)
Bank 2
(Channel 1)
Bank 3
(Channel 2)
Bank 4
(Channel 3)
2 DIMMs 1A ------ 2A ------ ------ ------ ------ ------
4 DIMMs 1A ------ 2A ------ 3A ------ 4A ------
6 DIMMs 1A 1B 2A 2B 3A ------ 4A ------
8 DIMMs 1A 1B 2A 2B 3A 3B 4A 4B
(*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. Interleaving memory is supported when pairs of DIMM modules are
installed. To optimize memory performance, please install pairs of DIMMs in both
Branch 0 and Branch 1. iv. For memory to work properly, you need to follow the
restrictions listed above. )