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Advanced Chipset Features
MSI Reminds You...
Change these settings only if you are familiar with the chipset.
DRAM Timing
The value in this field depends on performance parameters of the installed
memory chips (DRAM). Do not change the value from the factory setting un-
less you install new memory that has a different performance rating than the
original DRAMs.
CAS Latency (CL)
This controls the CAS latency, which determines the timing delay (in clock
cycles) before SDRAM starts a read command after receiving it. Settings:
[2.0], [2.5], [3.0]. [2.0] increases the system performance the most while [3.
0] provides the most stable performance.
TRAS
This setting determines the time RAS takes to read from and write to a
memory cell. Setting options: [5CLK] to [15CLK].
TRP
This setting controls the number of cycles for Row Address Strobe (RAS)
to be allowed to precharge. If insufficient time is allowed for the RAS to
accumulate its charge before DRAM refresh, refresh may be incomplete
and DRAM may fail to retain data. This item applies only when synchronous
DRAM is installed in the system. Setting options: [2CLK] to [6CLK].
TRCD
W hen DRAM is refres hed, both rows and c olumns are addres sed
separately. This setup item allows you to determine the timing of the
transition from RAS (row address strobe) to CAS (column address strobe).
The less the clock cycles, the faster the DRAM performance. Setting options:
[2CLK] to [6CLK].
Bank Interleaving
This field selects 2-bank or 4-bank interleave for the installed SDRAM. Disable
the function if 16MB SDRAM is installed. Settings: [Auto], [Disabled].
BIOS Setup
3-11
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