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ASUS P4T-F User’s Manual 59
4. BIOS SETUP
4. BIOS SETUP
Advanced Menu
RDRAM Frequency:FSB Ratio (MHz) [Auto]
This feature tells the clock generator which frequency to send to the
RDRAM. The default setting [Auto] makes the system detect and set the
ratio according to the type of RDRAM module. The [Auto] default bal-
ances performance with stability. Alternatively, with PC600 RDRAM, se-
lect [3x], and with PC800 RDRAM, select [4x]. If overclocking the CPU,
select [3x] to maintain stability. Configuration options: [Auto] [3x] [4x]
APIC [Disabled]
This field is an Advanced Programmable Interrupt Controller. It is
functional only with Windows XP or 2000. Enabling the A.P. I. C. feature
reduces interrupt sharing and improves system performance.
Configuration options: [Disabled] [Enabled]
CPU Level 1 Cache, CPU Level 2 Cache [Enabled]
These fields allow you to choose from the default of [Enabled] or choose
[Disabled] to turn on or off the CPU’s Level 1 and Level 2 built-in cache.
Configuration options: [Disabled] [Enabled]
CPU Fast String [Enabled]
When set to [Enabled], the CPU has direct access to the memory. Leave on
default setting for best performance. Configuration options: [Disabled]
[Enabled]
FPU OPCODE Compatible Mode [Disabled]
Leave on default setting for optimized performance of Pentium 4 proces-
sor. Configuration options: [Disabled] [Enabled]
BIOS Update [Enabled]
This functions as an update loader integrated into the BIOS to supply the
processor with the required data. In the default position of [Enabled], the
BIOS will load the update on all processors during system bootup. Con-
figuration options: [Disabled] [Enabled]
PS/2 Mouse Function Control [Auto]
The default of [Auto] allows the system to detect a PS/2 mouse on startup.
If detected, IRQ12 will be used for the PS/2 mouse. IRQ12 will be re-
served for expansion cards only if a PS/2 mouse is not detected. [Enabled]
will always reserve IRQ12, whether on startup a PS/2 mouse is detected or
not. Configuration options: [Enabled] [Auto]
USB Legacy Support [Auto]
This motherboard supports Universal Serial Bus (USB) devices. The de-
fault of [Auto] allows the system to detect a USB device on startup. If
detected, USB controller legacy mode will be enabled. If not detected, USB
controller legacy mode will be disabled. When this field is set to [Dis-
abled], USB controller legacy mode is disabled no matter whether you are
using a USB device or not. Configuration options: [Disabled] [Enabled]
[Auto]