SDRAM RAS Precharge Delay [3T]

This item controls the idle clocks after issuing a precharge command to the DDR SDRAM.

The DDR SDRAM RAS Precharge Delay parameter appears only when you set the SDRAM Configuration to [User Defined].

SDRAM Active Precharge Delay [6T]

This item controls the number of DDR SDRAM clocks used for DDR SDRAM parameters.

The DDR SDRAM Active Precharge Delay parameter appears only when you set the SDRAM Configuration to [User Defined].

SDRAM Idle Timer [Infinite]

Configuration options: [Infinite] [0T] [8T] [16T] [64T]

Optimization Mode [Normal]

This parameter allows you to enhance system performance and overclocking capability when set to [Turbo 1] or [Turbo 2]. If you encounter any problems with the turbo settings, return to the default setting [Normal]. Configuration options: [Normal] [Turbo 1] [Turbo 2]

Graphics Aperture Size [64MB]

This feature allows you to select the size of mapped memory for AGP graphic data. Configuration options: [4MB] [8MB] [16MB] [32MB] [64MB] [128MB] [256MB]

AGP Capability [4X Mode]

This motherboard supports the AGP 4X interface that transfers video data at 1066MB/s. AGP 4X is backward-compatible, so you may keep the default [4X Mode] even if you are using an AGP 1X video card. When set to [1X Mode], the AGP interface only provides a peak data throughput of 266MB/s even if you are using an AGP 4x card.

Configuration options: [1X Mode] [4X Mode]

ASUS P4B266-C motherboard user guide

4-19