MSI 865GM2-LS User Guide - Page 59

MS-6743 M-ATX Mainboard or refreshed. Fast speed offers faster performance while slow speed offers more stable performance. Settings: 4, 3, 2 (clocks). DRAM RAS# Precharge This item controls the number of cycles for Row Address Strobe (RAS) to be allowed to precharge. If insufficient time is allowed for the RAS to accumulate its charge before DRAM refresh, refresh may be incomplete and DRAM may fail to retain data. This item applies only when synchronous DRAM is installed in the system. Available settings: 4, 3, 2 (clocks). Memory Frequency For Use this item to configure the clock frequency of the installed DRAMs. Setting options: Auto, DDR266, DDR333, DDR320, DDR400. System BIOS Cacheable Selecting Enabled allows caching of the system BIOS ROM at F0000hFFFFFh, resulting in better system performance. However, if any program writes to this memory area, a system error may result. Setting options: Enabled, Disabled. Video BIOS Cacheable Selecting Enabled allows caching of the video BIOS ROM at C0000h to C7FFFh, resulting in better video performance. However, if any program writes to this memory area, a system error may result. Setting options: Disabled, Enabled. Memory Hole At 15M-16M 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. When this area is reserved, it cannot be cached. Settings: Enabled, Disabled. Delay Prior to Thermal When the CPU temperature reaches a factory preset level, a thermal monitoring mechanism will be enabled following the appropriate timing delay specified in this field. With the thermal monitoring enabled, clock modulation controlled by the processor's internal thermal sensor is also activated to keep the processor within allowable temperature limit. Setting options: 4 Min, 8 Min, 16 Min, 32 Min. 3-14