Asus P4P800-MX P4P800-MX user's manual - Page 54
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2.4.3 Chipset The Chipset menu items allow you to change the advanced chipset settings. Select an item then press Enter to display the sub-menu. Advanced Chipset settings WARNING: Setting wrong values in the sections below may cause system to malfunction. CPU External Frequency (MHz) DDR Reference Voltage DRAM Frequency Configure DRAM Timing by SPD [Auto] [Auto] [Auto] [Enabled] Graphic Adapter Priority Onboard Video Memory Graphics Aperture Size Spread Spectrum [Internal VGA] [Enabled, 8MB] [ 64 MB] [Enabled] MPS Revision [1.1] Select Screen Select Item +- Change Option F1 General Help F10 Save and Exit ESC Exit CPU External Frequency [Auto] This field indicates the frequency sent by the clock generator to the system bus and PCI bus. The bus frequency (external frequency) multiplied by the bus multiple equals the CPU speed. Configuration options: [Auto] [133 MHz] [135 MHz] [137 MHz] [140 MHz] [147 MHz] DDR Reference Voltage [Auto] Allows the selection of the DDR SDRAM operating voltage. Configuration options: [Auto] [2.55V] [2.65V] DRAM Frequency [Auto] Allows you to set the DDR operating frequency. Configuration options: [266 MHz] [333 MHz] [Auto] Configure DRAM Timing by SPD [Enabled] When this item is enabled, the DRAM timing parameters are set according to the DRAM SPD (Serial Presence Detect). When disabled, you can manually set the DRAM timing parameters through the DRAM sub-items. Configuration options: [Disabled] [Enabled] The following sub-items appear when the item Configure DRAM Timing by SPD is set to Disabled. 2-16 Chapter 2: BIOS information