System Installation
ROBO-8913VG2AR User’s Manual
3-4
3.2 Main
Memory
ROBO-8913 provides 2 x 240-pin DDR2-SDRAM DIMM sockets support 1.8V dual-
channel DDR2 800/667 non-ECC DIMMs. The maximum memory size can be up to
8GB. Auto detecting memory clock is according to BIOS CMOS settings.
For system compatibility and stability, don’t use memory module without brand.
You can also use single-sided or double-sided DIMM in both slots.
Watch out the contact and lock integrity of memory module with socket, it will
impact on the system reliability. Follow normal procedures to install your DRAM
module into memory socket. Before locking, make sure that all modules have been
fully inserted into the card slots.
Dual Channel DDR2 DIMMs
Dual Channel DDR2 memory technology doubles the bandwidth of memory bus.
Adequate or higher bandwidth of memory than processor would increase system
performance. To enable Dual Channel DDR2 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.
Memory Frequency
Dual Channel DDR
Bandwidth
Single Channel DDR
Bandwidth
800MHz 25.6
GB/s 12.8
GB/s
667 MHz
21.2 GB/s
10.6 GB/s
Note:
To maintain system stability, don’t change any of DRAM parameters in BIOS setup
to upgrade your system performance without acquiring technical information.
CPU FSB / Memory Frequency synchronization
Support different memory frequencies depending on the CPU front side bus and the
type of DDR2 DIMM. Watch Out, it’s meaning that memory maximum frequency on
configuration, which is synchronization and based on CPU FSB.
CPU FSB
Memory Frequency
1066MHz
533 / 667 / 800MHz
800 MHz
533 / 667 / 800MHz
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