Biostar P4TCA PRO P4TCA Pro BIOS setup guide - Page 15

P4TCA Pro BIOS Setup DRAM RAS# to CAS# Delay This field let you insert a timing delay between the CAS and RAS strobe signals, used when DRAM is written to, read from, or refreshed. Fast gives faster performance; and slow gives more stable performance. This field applies only when synchronous DRAM is installed in the system. The Choices: 4 (default), 3, 2. DRAM RAS# Precharge If an insufficient number of cycle is allowed for RAS to accumulate its charge before DRAM refresh, the refresh may be incomplete, and the DRAM may fail to retain data. Fast gives faster performance; and Slow gives more stable performance. This field applies only when synchronous DRAM is installed in the system. The Choices: 4 (default), 3, 2. Memory Frequency For This item allows you to select the Memory Frequency. The Choices: Auto (default), DDR266, DDR300, DDR400. System BIOS Cacheable Selecting Enabled allows you caching of the system BIOS ROM at F0000h~FFFFFh, resulting a better system performance. However, if any program writes to this memory area, a system error may result. The Choices: Enabled (default), Disabled. Video BIOS Cacheable Select Enabled allows caching of the video BIOS, resulting a better system performance. However, if any program writes to this memory area, a system error may result. The Choices: Disabled, Enabled(default). Video RAM Cacheable This option allows you to enable or disable VGA RAM cache capability. The Choices: Disabled (default), Enabled Memory Hole At 15M-16M You can reserve this area of system memory for ISA adapter ROM. When this area is reserved it cannot be cached. The user information of peripherals that need to use this area of system memory usually2 discussed their memory requirements. The Choices: Disabled (default), Enabled. Delay Prior to Thermal Set this item to enable the CPU Thermal function to engage after the specified time. The Choices: 4, 8, 16 (default), 32. 14