SETUP BIOS .4
Configuration Chip
4. BIOS SETUP
SDRAM RAS to CAS DelayThis controls the latency between the SDRAM active command and the read/write command.
SDRAM RAS Precharge TimeThis controls the idle clocks after issuing a precharge command to the
SDRAM.
SDRAM Cycle Time (Tras, Trc) [6T, 8T]This feature controls the number of SDRAM clocks used for SDRAM parameters Tras and Trc. Tras specifies the minimum clocks required between active command and precharge command. Trc specifies the minimum clocks required between active command and
This feature controls that after a page miss whether the Graphics and Memory Controller Hub (GMCH) will issue “precharge only the bank” or “precharge all” command to a specific opened SDRAM bank. Configuration options: [One Bank] [All Banks]
CPU Latency Timer [Enabled]This controls the GMCH’s response to CPU deferrable cycles. Configuration options: [Disabled] [Enabled]
Command Per Cycle [Enabled] (only for Intel 815E Chipset) When onboard VGA is used, CPU can help to gain graphics performance by increasing proper SDRAM cycles combinations. Configuration options: [Enabled] [Disabled]
Video Memory Cache Mode [UC]USWC (uncacheable, speculative write combining) is a new cache technology for the video memory of the processor. It can greatly improve the display speed by caching the display data. You must set this to UC (uncacheable) if your display card cannot support this feature; otherwise your system may not boot. Configuration options: [UC] [USWC]
Graphics Window Size [64MB]This feature allows you to select the size of mapped memory for AGP graphic data. Configuration options: [64MB] [32MB]
AGP Capability [4X Mode]This motherboard supports the AGP 4x interface, which transfers video data at 1066MB/s. Since AGP 4x is
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