ASRock P4i45E R3.0 User Manual - Page 24
SDRAM CAS Latency
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Chipset Configuration: Advanced AMIBIOS SETUP UTILITY - VERSION 3.31a Chipset Configuration [ Setup Help ] AGP Aperture Size ICH Delayed Transaction USB Controller USB Device Legacy Support CPU Thermal Throttling DRAM Write Throttling SDRAM CAS Latency ******** DRAM Timing ******** Configure SDRAM Timing by SPD SDRAM RAS# Precharge SDRAM RAS# to CAS# Delay 64MB Disabled Enabled Disabled Disabled Disabled Auto Disabled 3 Clocks 3 Clocks to select the size of mapped memory for graphics data. F1:Help Esc:Previous Menu :Select Item +/-:Change Values Enter:Select Sub-Menu F9:Setup Defaults F10:Save & Exit AGP Aperture Size: It refers to a section of the PCI memory address range used for graphics memory. We recommend that you leave this field at the default value unless your AGP card requires other sizes. ICH Delayed Transaction: Select [Enabled] will enable delayed transactions for internal register, FWH, and LPC interface accesses. USB Controller: Use this to enable or disable the use of USB controller. USB Device Legacy Support: Use this to enable or disable support to emulate legacy I/O devices such as mouse, keyboard,... etc. CPU Thermal Throttling: Select [Enabled] will enable P4 thermal control circuit to keep CPU from overheated. DRAM Write Throttling: Select [Enabled] will reduce the temperature of North Bridge and DRAM. However, it will decrease the memory writing throughput. SDRAM CAS Latency: This parameter controls the latency between the read command and the time the data available. 24