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3.6 Advanced menu The Advanced menu items allow you to change the settings for the CPU and other system devices. Be cautious when changing the settings of the Advanced menu items. Incorrect field values can cause the system to malfunction. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot CPU Configuration North Bridge Configuration Onboard Devices Configuration USB Configuration PCIPnP Intel VT-d T.Probe [Disabled] [Enabled] Tools Exit Configure CPU. ←→ Select Screen ↑↓ Select Item Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2009, American Megatrends, Inc. Chapter 3 3.6.1 CPU Configuration The items in this menu show the CPU-related information that the BIOS automatically detects. The items shown in this screen may be different due to the CPU you installed. BIOS SETUP UTILITY Advanced Configure advanced CPU settings Module Version:01.04 Manufacturer:Intel Brand String:Genuine Intel(R) CPU Frequency :2.66GHz BCLK Speed :133MHz Cache L1 :128 KB Cache L2 :1024 KB Cache L3 :8192 KB Ratio Status:Unlocked (Min:09, Max:20) Ratio Actual Value:20 CPUID :106E1 CPU Ratio Setting C1E Support Hardware Prefetcher Adjacent Cache Line Prefetch Max CPUID Value Limit Intel(R) Virtualization Tech [Auto] [Enabled] [Enabled] [Enabled] [Disabled] [Enabled] Sets the ratio between CPU Core Clock and the FSB Frequency. NOTE: If an invalid ratio is set in CMOS then actual and setpoint values may differ. NOTE: Please key in ratio numbers directly ←→ Select Screen ↑↓ Select Item F1 General Help F10 Save and Exit ESC Exit Scroll down to display the following items: CPU TM Function [Enabled] Execute-Disable Bit Capability [Enabled] Intel(R) HT Technology [Enabled] Active Processor Cores [All] A20M [Disabled] Intel(R) SpeedStep(TM) Tech [Enabled] Intel(R) TurboMode Tech [Enabled] Intel(R) C-STATE Tech [Disabled] v02.61 (C)Copyright 1985-2009, American Megatrends, Inc. ASUS SABERTOOTH 55i 3-21

Section	Page
Contents	3
Notices	7
Safety information	8
About this guide	9
SABERTOOTH 55i specifications summary	11
Chapter 1: Product introduction	15
1.1 Welcome!	15
1.2 Package contents	15
1.3 Special features	16
1.3.1 Product highlights	16
1.3.2 “TUF ENGINE!” Power Design	17
1.3.3 “Ultimate COOL!” Thermal Solutions	17
1.3.4 “Safe & Stable!” Guardian Angel	18
1.3.5 ASUS exclusive features	18
Chapter 2: Hardware information	21
2.1 Before you proceed	21
2.2 Motherboard overview	22
2.2.1 Motherboard layout	22
2.2.2 Layout contents	23
2.2.3 Placement direction	24
2.2.4 Screw holes	24
2.3 Central Processing Unit (CPU)	25
2.3.1 Installing the CPU	25
2.3.2 Installing the CPU heatsink and fan	28
2.3.3 Uninstalling the CPU heatsink and fan	29
2.4 System memory	30
2.4.1 Overview	30
2.4.2 Memory configurations	31
2.4.3 Installing a DIMM	37
2.4.4 Removing a DIMM	37
2.5 Expansion slots	38
2.5.1 Installing an expansion card	38
2.5.2 Configuring an expansion card	38
2.5.3 Interrupt assignments	39
2.5.4 PCI slots	40
2.5.5 PCI Express 2.0 x1 slots (2.5GT/s)	40
2.5.6 PCI Express 2.0 x16 slots	40
2.6 Jumpers	42
2.7 Onboard switches	43
2.8 Connectors	46
2.8.1 Rear panel connectors	46
2.8.2 Audio I/O connections	47
2.8.3 Internal connectors	50
2.8.4. ASUS Q-Connector (system panel)	59
2.9 Onboard LEDs	60
2.10 Starting up for the first time	61
2.11 Turning off the computer	61
Chapter 3: BIOS setup	63
3.1 Knowing BIOS	63
3.2 Updating BIOS	63
3.2.1 ASUS Update utility	64
3.2.2 ASUS EZ Flash 2 utility	66
3.2.3 ASUS CrashFree BIOS 3 utility	67
3.2.4 ASUS BIOS Updater	67
3.3 BIOS setup program	70
3.3.1 BIOS menu screen	70
3.3.2 Menu bar	70
3.3.3 Navigation keys	71
3.3.4 Menu items	71
3.3.5 Submenu items	71
3.3.6 Configuration fields	71
3.3.7 Pop-up window	71
3.3.8 Scroll bar	71
3.3.9 General help	71
3.4 Main menu	72
3.4.1 SATA 1-6	72
3.4.2 Storage Configuration	74
3.4.3 AHCI Configuration	75
3.4.4 System Information	75
3.5 Ai Tweaker menu	76
3.5.1 Ai Overclock Tuner [Auto]	76
3.5.2 CPU Ratio Setting [Auto]	77
3.5.3 Intel(R) SpeedStep(TM) Tech [Enabled]	77
3.5.8 DRAM Frequency [Auto]	78
3.5.9 QPI Frequency [Auto]	78
3.5.10 DRAM Timing Control	78
3.5.4 Intel(R) TurboMode Tech [Enabled]	78
3.5.5 Xtreme Phase Full Power Mode [Auto]	78
3.5.6 BCLK Frequency [XXX]	78
3.5.7 PCIE Frequency [XXX]	78
3.5.11 CPU Differential Amplitude [Auto]	80
3.5.12 CPU Clock Skew [Auto]	80
3.5.13 CPU Voltage Mode [Offset]	80
3.5.14 IMC Voltage [Auto]	81
3.5.15 DRAM Voltage [Auto]	81
3.5.16 CPU PLL Voltage [Auto]	81
3.5.17 PCH Voltage [Auto]	82
3.5.18 DRAM DATA REF Voltage on CHA/B [Auto]	82
3.5.19 DRAM CTRL REF Voltage on CHA/B [Auto]	82
3.5.20 Load-Line Calibration [Auto]	82
3.5.21 CPU Spread Spectrum [Auto]	82
3.5.22 PCIE Spread Spectrum [Auto]	82
3.6 Advanced menu	83
3.6.1 CPU Configuration	83
3.6.2 North Bridge Configuration	85
3.6.3 Onboard Devices Configuration	86
3.6.4 USB Configuration	87
3.6.5 PCIPnP	88
3.6.6 Intel VT-d [Disabled]	88
3.6.7 T.Probe [Enabled]	88
3.7 Power menu	89
3.7.1 Suspend Mode [Auto]	89
3.7.2 Repost Video on S3 Resume [No]	89
3.7.3 ACPI 2.0 Support [Disabled]	89
3.7.4 ACPI APIC Support [Enabled]	89
3.7.5 EuP Ready [Disabled]	89
3.7.6 APM Configuration	90
3.7.7 Hardware Monitor	91
3.8 Boot menu	92
3.8.1 Boot Device Priority	92
3.8.2 Boot Settings Configuration	93
3.8.3 Security	94
3.9 Tools menu	96
3.9.1 ASUS O.C. Profile	96
3.9.2 Drive Xpert Configuration	98
3.9.3 AI NET 2	99
3.9.4 ASUS EZ Flash 2	99
3.10 Exit menu	100
Chapter 4: Software support	101
4.1 Installing an operating system	101
4.2 Support DVD information	101
4.2.1 Running the support DVD	101
4.2.2 Obtaining the software manuals	102
4.3 Software information	103
4.3.1 ASUS PC Probe II	103
4.3.2 ASUS Fan Xpert	104
4.3.3 VIA® High Definition Audio utility	105
4.3.4 ASUS Drive Xpert	106
4.3.5 ASUS T.Probe	107
4.4 RAID configurations	108
4.4.1 RAID definitions	108
4.4.2 Installing Serial ATA hard disks	109
4.4.3 Setting the RAID item in BIOS	109
4.4.4 Intel® Matrix Storage Manager option ROM utility	109
4.5 Creating a RAID driver disk	113
4.5.1 Creating a RAID driver disk without entering the OS	113
4.5.2 Creating a RAID driver disk in Windows®	113
4.5.3 Installing the RAID driver during Windows® OS installation	114
4.5.4 Using a USB floppy disk drive	114
Chapter 5: Multiple GPU technology support	117
5.1 ATI® CrossFireX™ technology	117
5.1.1 Requirements	117
5.1.2 Before you begin	117
5.1.3 Installing two CrossFireX™ graphics cards	118
5.1.4 Installing the device drivers	119
5.1.5 Enabling the ATI® CrossFireX™ technology	119
5.2 NVIDIA® SLI™ technology	121
5.2.1 Requirements	121
5.2.2 Installing two SLI-ready graphics cards	121
5.2.3 Installing the device drivers	122

Match case Limit results 1 per page

ASUS SABERTOOTH 55i

3-21

Chapter 3

Be cautious when changing the settings of the Advanced menu items. Incorrect ﬁeld values

can cause the system to malfunction.

3.6

Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system

devices.

3.6.1

CPU Conﬁguration

The items in this menu show the CPU-related information that the BIOS automatically detects.

The items shown in this screen may be different due to the CPU you installed.

BIOS SETUP UTILITY

Main

Ai Tweaker

Advanced

Power

Boot

Tools

Exit

Conﬁgure CPU.

←→

Select Screen

↑↓

Select Item

Enter Go to Sub Screen

General Help

F10

Save and Exit

ESC

Exit

CPU Conﬁguration

North Bridge Conﬁguration

Onboard Devices Conﬁguration

USB Conﬁguration

PCIPnP

Intel VT-d

[Disabled]

T.Probe

[Enabled]

Scroll down to display the following items:

BIOS SETUP UTILITY

Advanced

Sets the ratio between

CPU Core Clock and the

FSB Frequency.

NOTE: If an invalid

ratio is set in CMOS

then actual and

setpoint values may

differ.

NOTE: Please key in

ratio numbers directly

←→

Select Screen

↑↓

Select Item

General Help

F10

Save and Exit

ESC

Exit

Conﬁgure advanced CPU settings

Module Version:01.04

Manufacturer:Intel

Brand String:Genuine Intel(R) CPU

Frequency

:2.66GHz

BCLK Speed

:133MHz

Cache L1

:128 KB

Cache L2

:1024 KB

Cache L3

:8192 KB

Ratio Status:Unlocked (Min:09, Max:20)

Ratio Actual Value:20

CPUID

:106E1

CPU Ratio Setting

[Auto]

C1E Support

[Enabled]

Hardware Prefetcher

[Enabled]

Adjacent Cache Line Prefetch

[Enabled]

Max CPUID Value Limit

[Disabled]

Intel(R) Virtualization Tech

[Enabled]

CPU TM Function

[Enabled]

Execute-Disable Bit Capability [Enabled]

Intel(R) HT Technology

[Enabled]

Active Processor Cores

[All]

A20M

[Disabled]

Intel(R) SpeedStep(TM) Tech

[Enabled]

Intel(R) TurboMode Tech

[Enabled]

Intel(R) C-STATE Tech

[Disabled]