ICP Electronics WAFER-5823, Руководство пользователя

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4.4 CHIPSET FEATURES SETUP
This setup function works mostly on board's chipset. This option is
used to change the chipset's configuration. Please, carefully
change any default setting, otherwise the system will run
unstable.
SDRAM Clock Ratio Div By: To select the operating clock of
SDRAM module. If you have GX1-300 CPU on board, the ratio is
set to 4, then the clock would be:
300 / 4 = 75 MHz
In order to maintain the stability of CPU board, remember not set
the clock over 80 MHz, although higher frequency means higher
performance.