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4.4 Ai Tweaker menu The Ai Tweaker menu items allow you to configure overclocking-related items. Take caution when changing the settings of the Ai Tweaker menu items. Incorrect field values can cause the system to malfunction. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot Configure System Performance Settings Current FSB Speed Current Memory Speed Target Memory Speed System Clock Mode PCIE Frequency (MHz) 1333 MHz 800 MHz 800 Mhz [Auto] [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] Tools Exit [Auto] Set FSB & Memor clock automatically. [Linked] Allows Memory and FSB to overclock proportionally. [Manual] Enter FSB and Memory clock manually. CPU Spread Spectrum [Auto] NB PCIE Spread Spectrum [Auto] SB PCIE Spread Spectrum [Auto] CPU Voltage FSB Termination Voltage DRAM Voltage NB Voltage [Auto] [Auto] [Auto] [Auto] Select Screen Select Item +- Change Option F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2008, American Megatrends, Inc. Scroll down to display the following items: SB Voltage [Auto] SB 1.5VSB Voltage [Auto] CPU GTL Voltage Reference [Auto] v02.61 (C)Copyright 1985-2008, American Megatrends, Inc. The default values of the following items vary depending on the CPU and memory modules you install on the motherboard. 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. Configuration 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. Configuration options: [Auto] [1:1] [5:4] [3:2] [Sync Mode] ASUS P5N64 WS Professional 4-17

Section	Page
Contents	3
Notices	8
Safety information	9
About this guide	10
P5N64 WS Professional specifications	12
Chapter 1: Product introduction	15
1.1 Welcome!	17
1.2 Package contents	17
1.3 Special features	18
1.3.1 Product highlights	18
1.3.2 ASUS special features	21
1.3.3 ASUS Intelligent Overclocking features	24
Chapter 2: Hardware information	25
2.1 Before you proceed	27
2.2 Motherboard overview	28
2.2.1 Placement direction	28
2.2.2 Screw holes	28
2.2.3 Motherboard layout	29
2.2.4 Layout contents	30
2.3 Central Processing Unit (CPU)	32
2.3.1 Installing the CPU	33
2.3.2 Installing the CPU heatsink and fan	35
2.3.3 Uninstalling the CPU heatsink and fan	37
2.4 System memory	39
2.4.1 Overview	39
2.4.2 Memory configurations	40
2.4.3 Installing a DIMM	41
2.4.4 Removing a DIMM	41
2.5 Expansion slots	42
2.5.1 Installing an expansion card	42
2.5.2 Configuring an expansion card	42
2.5.3 Interrupt assignments	43
2.5.4 PCI slots	44
2.5.5 PCI Express x1 slot	44
2.5.6 PCI Express 2.0 x16 slots (blue)	44
2.5.7 Universal PCI Express x16 slots (black and white)	44
2.6 Jumper	46
2.7 Connectors	47
2.7.1 Rear panel connectors	47
2.7.2 Internal connectors	50
2.8 G.P. Diagnosis card installation	61
2.8.1 G.P. Diagnosis card layout	61
2.8.2 Installing G.P. Diagnosis card	61
2.8.3 G.P. Diagnosis card check codes	62
Chapter 3: Powering up	63
3.1 Starting up for the first time	65
3.2 Turning off the computer	66
3.2.1 Using the OS shut down function	66
3.2.2 Using the dual function power switch	66
Chapter 4: BIOS setup	67
4.1 Managing and updating your BIOS	69
4.1.1 ASUS Update utility	69
4.1.2 Creating a bootable floppy disk	72
4.1.3 ASUS EZ Flash 2 utility	73
4.1.4 AFUDOS utility	74
4.1.5 ASUS CrashFree BIOS 3 utility	76
4.2 BIOS setup program	77
4.2.1 BIOS menu screen	78
4.2.2 Menu bar	78
4.2.3 Navigation keys	78
4.2.4 Menu items	79
4.2.5 Sub-menu items	79
4.2.6 Configuration fields	79
4.2.7 Pop-up window	79
4.2.8 Scroll bar	79
4.2.9 General help	79
4.3 Main menu	80
4.3.1 System Time [xx:xx:xx]	80
4.3.2 System Date [Day xx/xx/xxxx]	80
4.3.3 Legacy Diskette A [1.44M, 3.5 in.]	80
4.3.4 Language [English]	80
4.3.5 Primary IDE Master/Slave	81
4.3.6 SATA 1~6	82
4.3.7 IDE Configuration	83
4.3.8 System Information	84
4.4 Ai Tweaker menu	85
4.5 Advanced menu	89
4.5.1 USB Configuration	89
4.5.2 CPU Configuration	90
4.5.3 Chipset	91
4.5.4 Onboard Devices Configuration	92
4.5.5 PCI PnP	93
4.6 Power menu	94
4.6.1 Suspend Mode [Auto]	94
4.6.2 Repost Video on S3 Resume [No]	94
4.6.3 ACPI 2.0 Support [Disabled]	94
4.6.4 ACPI APIC Support [Enabled]	94
4.6.5 APM Configuration	95
4.6.6 Hardware Monitor	96
4.7 Boot menu	98
4.7.1 Boot Device Priority	98
4.7.2 Boot Settings Configuration	99
4.7.3 Security	100
4.8 Tools menu	102
4.8.1 ASUS EZ Flash 2	102
4.8.2 Express Gate [Enabled]	103
4.8.3 ASUS O.C. Profile	103
4.8.4 Ai Net 2	105
4.9 Exit menu	106
Chapter 5: Software support	107
5.1 Installing an operating system	109
5.2 Support DVD information	109
5.2.1 Running the support DVD	109
5.2.2 Drivers menu	110
5.2.3 Utilities menu	111
5.2.4 Make Disk menu	113
5.2.5 Manual menu	114
5.2.6 ASUS Contact information	114
5.2.7 Other information	115
5.3 Software information	117
5.3.1 ASUS MyLogo2™	117
5.3.2 ASUS PC Probe II	119
5.3.3 ASUS AI Suite	125
5.3.4 ASUS EPU Utility -- AI Gear 3+	127
5.3.5 ASUS AI Nap	129
5.3.6 ASUS Q-Fan 2	130
5.3.7 ASUS AI Booster	131
5.3.8 AI Audio 2 (SoundMAX® High Definition Audio utility)	132
5.3.9 ASUS Express Gate	141
5.4 RAID configurations	148
5.4.1 RAID definitions	148
5.4.2 NVIDIA® RAID configurations	149
5.4.3 Marvell® eSATA RAID configurations	156
5.4.4 Marvell® SAS RAID configurations	162
5.5 Creating a RAID driver disk	171
5.5.1 Creating a RAID driver disk without entering the OS	171
5.5.2 Creating a SATA RAID driver disk in Windows®	171
Chapter 6: NVIDIA® SLI™ technology support	173
6.1 Overview	175
Requirements	175
6.2 Graphics card setup	176
6.2.1 Installing three SLI-ready graphics cards	176
6.2.2 Installing two SLI-ready graphics cards	179
6.2.3 Installing the device drivers	180
6.2.4 Enabling the NVIDIA® SLI™ technology in Windows®	180
Appendix: CPU features	183
A.1 Intel® EM64T	185
Using the Intel® EM64T feature	185
A.2 Enhanced Intel SpeedStep® Technology (EIST)	185
A.2.1 System requirements	185
A.2.2 Using the EIST	186
A.3 Intel® Hyper-Threading Technology	187

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ASUS P5N64 WS Professional

4-17

4.4

Ai Tweaker menu

The Ai Tweaker menu items allow you to conﬁgure overclocking-related items.

Take caution when changing the settings of the Ai Tweaker menu items.

Incorrect ﬁeld 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.

Conﬁguration 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.

Conﬁguration options: [Auto] [1:1] [5:4] [3:2] [Sync Mode]

Select Screen

Select Item

Change Option

General Help

F10

Save and Exit

ESC

Exit

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.

Conﬁgure 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:

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.