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---- Configure DRAM Timing ----
DRAM Frequency
This item allows to set DRAM Frequency. If [Auto] is selected, the motherboard
will detect the memory module(s) inserted and assigns appropriate frequency
automatically.
The choice: Auto, 667MHz, 800MHz.
Configure DRAM Timing by SPD
Select [Enabled] will configure the following items by the contents in the
SPD (Serial Presence Detect) device.
The choice: Disabled or Enabled.
DRAM tCL
When synchronous DRAM is installed, the number of clock cycles of CAS
latency depends on the DRAM timing
The choice: 3 ~ 10.
DRAM tRAS
The precharge time is the number of cycles it takes for DRAM to accumulate its
charge before refresh.
The choice: 9 ~ 24.
DRAM tRP
If an insufficient number of cycles is allowed for the RAS to accumulate its
charge before DRAM refresh, the refresh may be-incompleted, and the DRAM
may fail to retain data. Fast gives faster performance; and Slow gives more
stable performance. This field is applied only when synchronous DRAM is
installed in the system.
The choice: 3 ~ 10.
DRAM tRCD
This field lets you insert a timing delay between the CAS and RAS strobe
signals, and you can use it when DRAM is written to, read from, or refreshed.
Faster performance is gained in high speed, more stable performance, in low
speed. This field is applied only when synchronous DRAM is installed in the
system.
The choice: 3 ~ 10.
