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Asus Rampage II Extreme User Guide - Page 101

CPU Spread Spectrum [Auto] - clock skew

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CPU Voltage CPU PLL Voltage QPI/DRAM Core Voltage IOH Voltage IOH PCIE Voltage ICH Voltage ICH PCIE Voltage DRAM Bus Voltage Blue 0.85000-1.5000 1.81592-1.89542 1.20000-1.39375 1.11341-1.39166 1.51106-1.69656 1.11341-1.59041 1.51106-1.61706 1.51106-1.72306 Yellow 1.50625-1.59375 1.90867-1.94842 1.40000-1.65625 1.40491-1.64341 1.70981-1.84231 1.60366-1.84216 1.63031-1.80256 1.73631-2.31931 Red 1.60000- 1.96167- 1.66250- 1.65666- 1.85556- 1.85541- 1.81581- 2.33256- DRAM REF Voltage The items in this menu allow you to set the DRAM Reference Voltage. DRAM DATA REF Voltage on CHA/B/C [Auto] Allows you to set the DRAM DATA Reference Voltage on Channel A/B/C. DRAM CTRL REF Voltage on CHA/B/C [Auto] Allows you to set the DRAM Control Reference Voltage on Channel A/B/C. Debug Mode [String] Allows you to select the debug mode. Configuration options: [String] [Code] Keyboard TweakIt Control [Disabled] Allows you to enable or disable the keyboard TweakIt control. Configuration options: [Disabled] [Enabled] CPU Spread Spectrum [Auto] Set to [Disabled] to enhance BCLK overclocking ability or [Auto] for EMI control. Configuration options: [Auto] [Disabled] [Enabled] PCIE Spread Spectrum [Auto] Set to [Disabled] to enhance PCIE overclocking ability or [Auto] for EMI control. Configuration options: [Auto] [Disabled] [Enabled] CPU Clock Skew [Auto] Adjusting this item may help enhancing BCLK overclocking ability. You may need to adjust the IOH Clock Skew item at the same time. Configuration options: [Auto] [Normal] [Delay 100ps]-[Delay 1500ps] IOH Clock Skew [Auto] Adjusting this item may help enhancing BCLK overclocking ability. You may need to adjust the CPU Clock Skew item at the same time. Configuration options: [Auto] [Normal] [Delay 100ps]-[Delay 1500ps] ROG Rampage II Extreme 3-19

Section	Page
Contents	3
Notices	8
Safety information	9
About this guide	10
Rampage II Extreme specifications summary	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 ROG Intelligent Performance & Overclocking features	21
1.3.3 ROG unique features	23
1.3.4 ASUS special features	24
Chapter 2: Hardware information	27
2.1 Before you proceed	29
2.2 Motherboard overview	34
2.2.1 Motherboard layout	34
2.2.2 SupremeFX X-Fi audio card layout	34
2.2.3 Layout contents	35
2.2.4 Placement direction	36
2.2.5 Screw holes	36
2.3 Central Processing Unit (CPU)	37
2.3.1 Installing the CPU	38
2.3.2 Installing the CPU heatsink and fan	41
2.3.3 Uninstalling the CPU heatsink and fan	42
2.4 System memory	43
2.4.1 Overview	43
2.4.2 Memory configurations	44
2.4.3 Installing a DIMM	49
2.4.4 Removing a DIMM	49
2.5 Expansion slots	50
2.5.1 Installing an expansion card	50
2.5.2 Configuring an expansion card	50
2.5.3 Interrupt assignments	51
2.5.4 PCI slots	52
2.5.5 PCI Express x1 slots	52
2.5.6 PCI Express 2.0 x16 slots	52
2.6 Jumpers	54
2.7 Connectors	56
2.7.1 Rear panel connectors	56
2.7.2 Internal connectors	58
2.7.3 Onboard switches	70
2.7.4 TweakIt	71
2.7.5 ProbeIt	73
2.8 Installing accessories	74
2.8.1 Installing the optional fan	74
2.8.2 Installing the audio card	75
2.8.3 Installing EL I/O shield and LCD Poster	76
2.8.4 Installing the third party fusion block	77
2.9 Starting up for the first time	78
2.10 Turning off the computer	79
2.10.1 Using the OS shut down function	79
2.10.2 Using the dual function power switch	79
Chapter 3: BIOS setup	81
3.1 Managing and updating your BIOS	83
3.1.1 ASUS Update utility	83
3.1.2 Creating a bootable floppy disk	86
3.1.3 ASUS EZ Flash 2 utility	87
3.1.4 AFUDOS utility	88
3.1.5 ASUS CrashFree BIOS 3 utility	90
3.2 BIOS setup program	91
3.2.1 BIOS menu screen	92
3.2.2 Menu bar	92
3.2.3 Navigation keys	92
3.2.4 Menu items	93
3.2.5 Sub-menu items	93
3.2.6 Configuration fields	93
3.2.7 Pop-up window	93
3.2.8 Scroll bar	93
3.2.9 General help	93
3.3 Extreme Tweaker menu	94
3.3.1 Configure System Performance Settings	95
3.4 Main menu	102
3.4.1 System Time [xx:xx:xx]	102
3.4.2 System Date [Day xx/xx/xxxx]	102
3.4.3 Legacy Diskette A [1.44M, 3.5 in.]	102
3.4.4 Language [English]	102
3.4.5 SATA 1–6	103
3.4.6 Storage Configuration	104
3.4.7 AHCI Configuration	105
3.4.8 System Information	106
3.5 Advanced menu	107
3.5.1 CPU Configuration	107
3.5.2 Chipset	109
3.5.3 Onboard Device Configuration	110
3.5.4 USB Configuration	111
3.5.5 PCI PnP	112
3.5.6 LCD Poster and LED Control	113
3.5.7 iROG Configuration	115
3.6 Power menu	116
3.6.1 Suspend Mode [Auto]	116
3.6.2 Repost Video on S3 Resume [No]	116
3.6.3 ACPI 2.0 Support [Disabled]	116
3.6.4 ACPI APIC Support [Enabled]	116
3.6.5 APM Configuration	117
3.6.6 Hardware Monitor	118
3.7 Boot menu	121
3.7.1 Boot Device Priority	121
3.7.2 Boot Settings Configuration	122
3.7.3 BIOS Boot Priority	123
3.7.4 Security	124
3.8 Tools menu	126
3.8.1 ASUS EZ Flash 2	126
3.8.2 ASUS O.C. Profile	127
3.8.3 AI NET 2	128
3.8.4 BIOS Flashback	129
3.9 Exit menu	130
Chapter 4: Software support	131
4.1 Installing an operating system	133
4.2 Support DVD information	133
4.2.1 Running the support DVD	133
4.2.2 Drivers menu	134
4.2.3 Utilities menu	135
4.2.4 Make disk menu	137
4.2.5 Manual menu	138
4.2.6 Video menu	138
4.2.7 ASUS Contact information	139
4.2.8 Other information	139
4.3 Software information	141
4.3.1 ASUS MyLogo3™	141
4.3.2 AI NET 2	143
4.3.3 Sound Blaster X-Fi audio utility	144
4.3.4 ASUS PC Probe II	148
4.3.5 ASUS AI Suite	154
4.3.6 ASUS AI Nap	156
4.3.7 ASUS Fan Xpert	157
4.3.8 CPU Level Up	159
4.3.9 ASUS EPU-6 Engine	160
4.3.10 ASUS TurboV	164
4.4 RAID configurations	166
4.4.1 RAID definitions	166
4.4.2 Installing Serial ATA hard disks	167
4.4.3 Intel® RAID configurations	167
4.5 Creating a RAID driver disk	175
4.5.1 Creating a RAID driver disk without entering the OS	175
4.5.2 Creating a RAID driver disk in Windows®	175
Chapter 5: Multiple GPU technology support	177
5.1 ATI® CrossFireX™ technology	179
5.1.1 Requirements	179
5.1.2 Before you begin	179
5.1.3 Installing two CrossFireX graphics cards	180
5.1.4 Installing three CrossFireX graphics cards	181
5.1.5 Installing the device drivers	182
5.1.6 Enabling the ATI® CrossFireX™ technology	182
5.2 NVIDIA® SLI™ technology	184
5.2.1 Requirements	184
5.2.2 Installing two SLI-ready graphics cards	185
5.2.3 Installing three SLI-ready graphics cards	186
5.2.4 Installing the device drivers	187
5.2.5 Enabling the NVIDIA® SLI™ technology	187