MSI K9N2 User Guide - Page 58
DCT Unganged Mode For AM2+ CPU only
UPC - 816909044867
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MS-7375 Mainboard Adjust CPU FSB Frequency (M Hz) 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 (M Hz) This item shows the adjusted CPU frequency. Read only. Advance DRAM Configuration Press 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 Interleave 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 W hen the Memory Timings is set to [Manual], the field is adjustable. This field controls the SDRAM command rate. Selecting [1T] makes SDRAM signal controller to run at 1T (T=clock cycles) rate. Selecting [2T] makes SDRAM signal controller 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. W hen this area is reserved, it cannot be cached. DCT Unganged Mode (For AM 2+ CPU only) This mainboard supports dual-channel DRAM mode. W hen this is enabled, you can set different DRAM timing for these two channels. This item will appear when you install the CPU which supports unganged mode. 3-20