User's Manual

ASUS P5N64 WS Professional 4-17
4.4 Ai Tweaker menu
The Ai Tweaker menu items allow you to congure overclocking-related items.
Take caution when changing the settings of the Ai Tweaker menu items.
Incorrect eld values can cause the system to malfunction.
Current FSB/Memory Speed
Target Memory Speed
These items shows the current front side bus (FSB) and memory speed detected
by the BIOS and may vary depending on your settings of the System Clock Mode
item.
System Clock Mode [Auto]
Selects the system clock mode. Set this item to [Auto] to allow auto-adjustment
of FSB and memory clock. Set this item to [Linked] to allow FSB and memory to
overclock proportionally. Set this item to [Unlinked] to manually enter FSB and
memory clock.
Conguration options: [Auto] [Linked] [Unlinked]
FSB - Memory Ratio [Auto]
This sub-item appears only when you set the System Clock Mode item to
[Linked] and allows you to set the ratio between FSB and memory.
Conguration options: [Auto] [1:1] [5:4] [3:2] [Sync Mode]
Select Screen
Select Item
+- Change Option
F1 General Help
F10 Save and Exit
ESC Exit
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
BIOS SETUP UTILITY
Main Ai Tweaker Advanced Power Boot Tools Exit
[Auto] Set FSB & Memor
clock automatically.
[Linked] Allows Memory
and FSB to overclock
proportionally.
[Manual] Enter FSB and
Memory clock manually.
Congure System Performance Settings
Current FSB Speed 1333 MHz
Current Memory Speed 800 MHz
Target Memory Speed 800 Mhz
System Clock Mode [Auto]
PCIE Frequency (MHz) [100]
Current CAS-RCD-RP-RAS-CMD 6-6-6-15-1T
Current RRd-RC-WR-WTR-REF 4-21-7-13-7.6uS
Memory Timings [Auto]
CPU Spread Spectrum [Auto]
NB PCIE Spread Spectrum [Auto]
SB PCIE Spread Spectrum [Auto]
CPU Voltage [Auto]
FSB Termination Voltage [Auto]
DRAM Voltage [Auto]
NB Voltage [Auto]
Scroll down to display the following items:
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
SB Voltage [Auto]
SB 1.5VSB Voltage [Auto]
CPU GTL Voltage Reference [Auto]
The default values of the following items vary depending on the CPU and
memory modules you install on the motherboard.