Asus TUEP2-M User Manual download pdf (Page 62)

ASUS TUEP2-M User’s Manual62

4. BIOS SETUP

Chip Configuration

SDRAM RAS Precharge Time

This controls the idle clocks after issuing a precharge command to the

SDRAM.

SDRAM Cycle Time (Tras, Trc) [7T, 9T]

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 re-active command. Configuration

options: [5T, 7T] [7T, 9T]

SDRAM Page Closing Policy [One Bank]

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]

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 does not support this feature, otherwise

the 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 backward-compatible, you may leave the

default [4X Mode] on even if using an AGP 2x video card. When set to [2X

Mode], the AGP interface will only provide a peak data throughput of

533MB/s even when using an AGP 4x card. Configuration options: [2X

Mode] [4X Mode]

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Asus TUEP2-M User Manual Page 62