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ASUS P4PE BP motherboard user guide
2-19
System Performance Mode [Auto]
This item allows you to enhance system performance when set to Turbo mode. If
you encounter any problems with the Turbo setting, set to Optimal or Auto.
Configuration options: [Auto] [Optimal] [Turbo]
SDRAM Idle Timer [Auto]
Configuration options: [Infinite] [0T] [8T] [16T] [64T] [Auto]
Memory Turbo Mode [Disabled]
This item allows you to enable or disable the memory turbo mode. Configuration
options: [Disabled] [Enabled]
DRAM Refresh Rate [By SPD]
Configuration options: [By SPD] [15.6us] [7.8us]
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]
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]
Memory Hole At 15M-16M [Disabled]
This field allows you to reserve an address space for ISA expansion cards. Setting
the address space to a particular setting makes that memory space unavailable to
other system components. Expansion cards can only access memory up to 16MB.
Configuration options: [Disabled] [Enabled]
Delay Transaction [Enabled]
When set to [Enabled], this feature frees the PCI bus when the CPU is accessing
8-bit ISA cards. This process normally consumes about 50-60 PCI clocks without
PCI delayed transaction. Set this field to [Disabled] when using ISA cards that are
not PCI 2.1 compliant. Configuration options: [Disabled] [Enabled]