Nvidia 3-20, MS-7374 Mainboard Adjust CPU FSB Frequency MHz, Adjust CPU Ratio, FSB/DRAM Ratio

MS-7374 Mainboard

Adjust CPU FSB Frequency (MHz)

This item allows you to select the CPU Front Side Bus clock frequency (in MHz).

Adjust CPU Ratio

This item is used to adjust CPU clock multiplier (ratio). It is available only when the processor supports this function.

Adjusted CPU Frequency (MHz)

This item shows the adjusted CPU frequency. Read only.

Advance DRAM Configuration

Press <Enter> to enter the sub-menu and the following screen appears.

DRAM Timing Mode

Selects whether DRAM timing is controlled by the SPD (Serial Presence Detect) EEPROM on the DRAM module. Setting to [Auto] enables DRAM timings and the following related items to be determined by BIOS based on the configurations on the SPD. Selecting [Manual] allows users to configure the DRAM timings and the following related items manually.

Bank Interleaving

This field selects 2-bank or 4-bank interleave for the installed SDRAM. Disable the function if 16MB SDRAM is installed.

1T/2T Memory Timing

When the Memory Timings is set to [Manual], the field is adjustable. This field controls the SDRAM command rate. Selecting [1T] makes SDRAM signal control- ler to run at 1T (T=clock cycles) rate. Selecting [2T] makes SDRAM signal con- troller run at 2T rate.

SoftWare Memory Hole

In order to improve performance, certain space in memory can be reserved for ISA peripherals. This memory must be mapped into the memory space below 16MB. When this area is reserved, it cannot be cached.

FSB/DRAM Ratio

This setting controls the ratio of CPU FSB Clock & DRAM Frequency to enable the CPU FSB & DRAM to run at different frequency combinations (non-synchronous overclocking). Please note that the setting options vary according to the CPU FSB Clock preset.

3-20