User manual ABIT AT7 2-IN-1 REV 1

[. . . ] Copyright and Warranty Notice The information in this document is subject to change without notice and does not represent a commitment on part of the vendor, who assumes no liability or responsibility for any errors that may appear in this manual. No warranty or representation, either expressed or implied, is made with respect to the quality, accuracy or fitness for any particular part of this document. In no event shall the manufacturer be liable for direct, indirect, special, incidental or consequential damages arising from any defect or error in this manual or product. Product names appearing in this manual are for identification purpose only and trademarks and product names or brand names appearing in this document are the property of their respective owners. [. . . ] Enhance DRAM Performance: Two options are available: Disabled or Enabled. This item allow you to choose the DRAM access time cycle, 2T can let you get quick DRAM acess time than 3T, and 3Tis a general DRAM setting. User's Manual 3-18 Chapter 3 DRAM Queue Depth: Three options are available: 2 Level ( 4 Level ( 3 level. This item sets DRAM queue depth to accommodate maximum memory throughput. DRAM Command Rate: Two options are available: 2T Command or 1T Command. When the host (northbridge) locates the desired memory address, it then processes the wait state of commands. Set it to 2T Command for system compatibility or to 1T Command for system performance. DCLK Feedback Delay: Nine options are available: Auto ( 0 ps ( 120 ps ( 240 ps ( 360 ps ( 480 ps ( 600 ps ( 720 ps ( 840 ps. The northbridge via DCLK feedback signal to sense the DRAM clock timing of DRAM module. This item will effect the DRAM module's stability, we suggestion you set to Auto. AGP & P2P Bridge Control: This item can let you sets several items concerning the AGP parameters. If you do not understand what each item doing, please keep the default settings as well. Wrong settings will cause system unstablity or even prevent boot up! Figure 3-5D. AGP & P2P Bridge Control Screen AT7/AT7E Introducing the BIOS 3-19 AGP Aperture Size: Seven options are available: 256M ( 128M ( 64M ( 32M ( 16M ( 8M ( 4M (Back to 256M. This option specifies the amount of system memory that can be used by the AGP device. The aperture is a portion of the PCI memory address range dedicated for graphics memory address space. Host cycles that hit the aperture range are forwarded to the AGP without any translation. If you use the older AGP adapter that does not support AGP 4X mode, BIOS will automatically set it to 2X. Choosing Manual to key in an AGP Driving Value is described within the next section. It is recommended this field be set to Auto in order to avoid any errors in your system. AGP Driving Value: This item allows you to adjust the AGP driving force. If your AGP adapter can support this function, then you can choose Enabled. AGP Read Synchronization: Two options are available: Disabled or Enabled. [. . . ] Your ABIT authorized distributor should be able to provide the fastest solution to your technical problem. We sell our products through distributors who sell to resellers and stores. Your reseller should be very familiar with your system configuration and should be able to solve your problem much more efficiently than we could. After all, your reseller regards you as an important User's Manual H-2 Appendix H customer who may purchase more products and who can urge your friends to buy from him or her as well. [. . . ]