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X9DBU-3F/X9DBU-iF Motherboard User's Manual
Memory Support for the
The X9DBU-3F/X9DBU-iF Motherboard supports up to 384 GB Registered
(RDIMM)/Load Reduced (LRDIMM) ECC or Unbuffered (UDIMM) ECC/Non-ECC
DDR3 memory with speeds of 1600/1333/1066/800 MHz in 12 DIMM slots. For the
latest memory updates, please refer to our website a at http://www.supermicro.com/
products/motherboard.
Processor & Memory Module Population Confi guration
For memory to work properly, follow the tables below for memory installation.
Processors and their Corresponding Memory Modules
CPU#
CPU 1
P1-
DIMMA1
CPU2
P2-
DIMMD1
Processor and Memory Module Population for Optimal Performance
Number of
CPUs+DIMMs
(For memory to work properly, please follow the instructions below.)
1 CPU &
CPU1
2 DIMMs
P1-DIMMA1/P1-DIMMB1
1 CPU &
CPU1
4 DIMMs
P1-DIMMA1/P1-DIMMB1, P1-DIMMA2/P1-DIMMB2
1 CPU &
CPU1
6 DIMMs
P1-DIMMA1/P1-DIMMB1, P1-DIMMA2/P1-DIMMB2, P1-DIMMC1/P1-DIMMC2
2 CPUs &
CPU1 + CPU2
4 DIMMs
P1-DIMMA1/P1-DIMMB1, P2-DIMMD1/P2-DIMME1
2 CPUs &
CPU1 + CPU2
6 DIMMs
P1-DIMMA1/P1-DIMMB1/P1-DIMMC1, P2-DIMMD1/P2-DIMME1/ P2-DIMMF1
2 CPUs &
CPU1 + CPU2
8 DIMMs
P1-DIMMA1/P1-DIMMB1/P1-DIMMC1/P1-DIMMA2, P2-DIMMD1/P2-DIMME1/ P2-
DIMMF1/P2-DIMMD2
2 CPUs &
CPU1 + CPU2
10 DIMMs
P1-DIMMA1/P1-DIMMB1/P1-DIMMC1/P1-DIMMA2/P1-DIMMB2, P2-DIMMD1/P2-
DIMME1/P2-DIMMF1/P2-DIMMD2/P2-DIMME2
2 CPUs &
CPU1 + CPU2
12 DIMMs
P1-DIMMA1/P1-DIMMB1/P1-DIMMC1/P1-DIMMA2/P1-DIMMB2/P1-DIMMC2, P2-
DIMMD1/P2-DIMME1/P2-DIMMF1/P2-DIMMD2/P2-DIMME2/P2-DIMMF2
X9DBU-3F/X9DBU-iF
Corresponding DIMM Modules
P1-
P1-
P1-
DIMMA2
DIMMB1
DIMMB2
P2-
P2-
P2-
DIMMD2
DIMME1
DIMME2
CPU and Memory Population Confi guration Table
2-10
Motherboard
P1-
P1-
DIMMC1
DIMMC2
P2-
P2-
DIMMF1
DIMMF2
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