Portwell ROBO-8120VG2R, User Manual, Page: 26 / 70

System Installation
ROBO-8120VG2R User’s Manual 3-4
3.2 Main Memory
ROBO-8120VG2R provide 4 x 240-pin DIMM sockets which supports 800/1066/1333
ECC DDR3 SDRAM as main memory, The maximum memory size can be up to 32GB
capacity.
For system compatibility and stability, do not use memory module without brand.
Memory configuration can be either one double-sided DIMM in either one DIMM
socket or two single-sided DIMM in both sockets.
Watch out the contact and lock integrity of memory module with socket, it will
impact on the system reliability. Follow normal procedures to install memory module
into memory socket. Before locking, make sure that all modules have been fully
inserted into the card slots.
Dual Channel DDR3 DIMM
Dual Channel DDR3 memory technology doubles the bandwidth of memory bus.
Adequate or higher bandwidth of memory than processor would increase system
performance. To enable Dual Channel DDR3 memory technology, you have to install
dual identical memory modules in both memory sockets. Following tables show
bandwidth information of different processor and memory configurations.
CPU FSB Bandwidth
1333MHz 10.6GB/s
1066MHz 8.5GB/s
800MHz 6.4GB/s
Memory Frequency
Dual Channel DDR
Bandwidth
Single Channel DDR
Bandwidth
1333MHZ 21.2GB/s 10.6GB/s
1066MHz 17GB/s 8.5GB/s
800MHz 12.8GB/s 6.4GB/s
Note:
To maintain system stability, don’t change any of DRAM parameters in BIOS setup to
upgrade system performance without acquiring technical information.