Synchronous Mode Select
Common Options : Synchronous, Asynchronous
Quick Review
This BIOS feature controls the signal synchronization of the DRAM-CPU interface.
When set to Synchronous, the chipset synchronizes the signals from the DRAM controller with signals from the CPU bus (or front side bus). Please note that for the signals to be synchronous, the DRAM controller and the CPU bus must run at the same clock speed.
When set to Asynchronous, the chipset will decouple the DRAM controller from the CPU bus. This allows the DRAM controller and the CPU bus to run at different clock speeds.
Generally, it is advisable to use the Synchronous setting as a synchronized interface allows data transfers to occur without delay. This results in a much higher throughput between the CPU bus and the DRAM controller.
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