MSI 845GEM-L User Guide - Page 54

BIOS Setup between the CAS and RAS strobe signals, used when DRAM is written to, read from or refreshed. Fast speed offers faster performance while slow speed offers more stable performance. Settings: 3, 2 (clocks). 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: 3, 2 (clocks). DRAM Frequency This setting allows you to set the bus frequency for installed DRAM. Settings: Auto, DDR200, DDR266, DDR333 (only for 845GE/PE). Delayed Transaction The chipset has an embedded 32-bit posted write buffer to support delayed transactions cycles so that transactions to and from the ISA bus are buffered and PCI bus can perform other transactions while the ISA transaction is underway. Select Enabled to support compliance with PCI specification version 2.1. Setting options: 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. AGP Aperture Size (MB) This setting controls just how much system RAM can be allocated to AGP for video purposes. The aperture is a portion of the PCI memory address range dedicated to graphics memory address space. Host cycles that hit the aperture range are forwarded to the AGP without any translation. The option allows the selection of an aperture size of 4, 8, 16, 32, 64, 128, 256. 3-13