Memory Support

The H8DCT-HIBQF supports up to 192GB of Registered ECC or 64GB of Unbuffered ECC/non-ECC DDR3 1600/1333/1066MHz SDRAM in 12 DIMM slots. Populating DIMMs in groups of two, one per channel (2, 4 or 6 DIMMs/CPU), the same DIMM type in H8DCT-HIBQF each channel, the same amount of memory on each CPU will improve memory performance. Please refer to the table below:

Table 1 - Per channel populations options
  DIMM A DIMM B DIMM C Max. MHz, 1.5V DIMMs Max. MHz, 1.35V DIMMs Max. GB / channel
UDIMM SR or DR Empty Empty 1600 MHz 1333 MHz 8 GB
SR Empty SR 1333 MHz 1333 MHz 8 GB
DR Empty DR 1066 MHz 1066 MHz 16 GB
RDIMM SR or DR Empty Empty 1600 MHz 1333 MHz 16 GB
SR Empty SR 1333 MHz 1333 MHz 8 GB
SR SR SR 1066 MHz 800 MHz 12 GB
DR Empty DR 1066 MHz 1066 MHz 32 GB
Empty QR Empty 1066 MHz 800 MHz 32 GB
DR DR DR 800 MHz 800 MHz 48 GB

Memory Population Guidelines

Please follow the tables below when populating the H8DCT-HIBQF.

Table 2 - Memory Population for Optimal Performance For a Motherboard with One CPU (CPU1) Installed
# DIMMs CPU Channel 1 Channel 2
2 DIMMs CPU 1 P1-1A     P1-2A    
4 DIMMs CPU 1 P1-1A   P1-1C P1-2A   P1-2C
6 DIMMs CPU 1 P1-1A P1-1B P1-1C P1-2A P1-2B P1-2C


Table 3 - Memory Population for Optimal Performance For a Motherboard with Two CPU (CPU1 & CPU2) Installed
# DIMMs CPU Channel 1 Channel 2
4 DIMMs CPU 1 P1-1A     P1-2A    
CPU 2 P2-1A     P2-2A    
8 DIMMs CPU 1 P1-1A   P1-1C  P1-2A   P1-2C 
CPU 2 P2-1A    P2-1C P2-2A    P2-2C
12 DIMMs CPU 1 P1-1A P1-1B P1-1C P1-2A P1-2B P1-2C
CPU 2 P2-1A P2-1B P2-1C P2-2A P2-2B P2-2C

UDIMM: Unbuffered DIMM
RDIMM: Registered DIMM
P1-1A: CPU 1, Channel 1, DIMM A