The H8DGT-HF/-HIBQF supports up to 64GB of DDR3 ECC/Non-ECC UDIMM or up to 256GB of ECC DDR3 RDIMM (1333/1066/800MHz in 16 DIMM slots). Populating DIMMs in groups of four, one per channel (4, 8 DIMMs/CPU), the same DIMM type in 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
Max. MHz, 1.5V DIMMs
Max. MHz, 1.35V DIMMs
Max. GB / channel
UDIMM
SR or DR
Empty
1333 MHz
1333 MHz
8 GB
SR
SR
DR
DR
RDIMM
SR or DR
Empty
1333 MHz
1333 MHz
16 GB
SR
SR
DR
DR
QR
Empty
1333 MHz
1333 MHz
16 GB
QR
QR
1066 MHz
800 MHz
32 GB
Memory Population Guidelines
Please follow the tables below when populating the H8DGT-HF/-HIBQF
Table 2 - Memory Population for Optimal Performance (For a Motherboard with One CPU (CPU1) Installed)
# DIMMs
CPU
Channel 1
Channel 2
Channel 3
Channel 4
4 DIMMs
CPU 1
P1-1A
P1-2A
P1-3A
P1-4A
8 DIMMs
CPU 1
P1-1A
P1-1B
P1-2A
P1-2B
P1-3A
P1-3B
P1-4A
P1-4B
Table 3 - Memory Population for Optimal Performance (For a Motherboard with Two CPU (CPU1 & CPU2) Installed)