Asus PC133 User Manual

Also see for A7V: Hardware user manual User guide User manual Service manual

Contents

ASUS A7V User’s Manual604. BIOS SETUP4. BIOS SETUP4.4 Advanced MenuAdvanced MenuOperating Frequency Setting [User Define]When the motherboard is set to JumperFree™ mode, this field allows youto configure the external frequency of your CPU. Select [User Define] ifyou want to make changes to the CPU Frequency field. When [Standard]is selected, CPU (external) Frequency will be fixed at 100MHz. Configu-ration options: [Standard] [User Define]CPU Frequency (when Operating Frequency Settingis set to [User Define])This feature tells the clock generator what frequency to send tothe system bus and PCI bus. The bus frequency (external fre-quency) multiplied by the bus multiple equals the CPU speed (theCPU’s internal frequency). Note that selecting a frequency higherthan what the CPU manufacturer recommends may cause the sys-tem to hang or crash. See System Hangup later in this section.DRAM FrequencyThis field determines whether the memory clock frequency is set to be insynchronous or asynchronous mode with respect to the CPU Frequency.This must be set in conjunction with CPU (external) Frequency to matchthe speed of your SDRAM. When you press on this field, the firstavailable option in the pop-up menu equals the CPU Frequency you selectfor the previous field, and the second available option is the CPU Frequencymultiplied by 4/3. To maintain and ensure system stability, DRAM Fre-quency is set to [100 MHz] when the BIOS setup default settings are loaded/selected.