Memory Support
The H8DCT-(IBQ)F supports up to 32GB of DDR3 ECC/Non-ECC UDIMM or up to 128GB of ECC DDR3 RDIMM (1333/1066MHz in 12 DIMM slots). Populating DIMMs in pairs, one per channel (2, 4 or 6 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 |
DIMM C |
Max. MHz, 1.5V DIMMs |
Max. MHz, 1.35V DIMMs (6 core only) |
Max. GB / channel |
UDIMM |
SR or DR |
Empty |
Empty |
1333 MHz |
1333 MHz |
4 GB |
SR |
Empty |
SR |
1333 MHz |
1333 MHz |
4 GB |
RDIMM |
SR or DR |
Empty |
Empty |
1333 MHz |
1333 MHz |
8 GB |
SR |
Empty |
SR |
1333 MHz |
1333 MHz |
8 GB |
SR |
SR |
SR |
1066 MHz |
800 MHz |
12 GB |
Empty |
QR |
Empty |
800 MHz |
800 MHz |
16 GB |
DR |
DR |
DR |
800 MHz |
800 MHz |
24 GB |
SR or DR |
QR |
Empty |
800 MHz |
667 MHz |
24 GB |
SR or DR |
QR |
SR or DR |
667 MHz |
667 MHz |
32 GB |
Note: Quad-rank DIMM must be DIMM B.
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