Document Outline

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