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Asus P7P55D-E EVO User Manual - Page 80

CPU Differential Amplitude [Auto], CPU Clock Skew [Auto], CPU Voltage Mode [Offset], IMC Voltage [

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3.5.15 CPU Differential Amplitude [Auto] Different AMP might enhance BCLK overclocking ability. Configuration options: [Auto] [700mV] [800mV] [900mV] [1000mV] 3.5.16 CPU 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] Some of the following items are adjusted by typing the desired values using the numeric keypad and press the key. You can also use the and keys to adjust the value. To restore the default setting, type [auto] using the keyboard and press the key. 3.5.17 CPU Voltage Mode [Offset] Allows you to set the CPU Voltage Mode. Different sub-items appear according to the CPU Voltage Mode item setting. Configuration options: [Offset] [Manual] Offset Voltage [Auto] This item appears only when you set the CPU Voltage Mode item to [Offset] and allows you to set the Offset voltage. The values range from 0.00625V to 0.50000V with a 0.00625V interval. Offset Sign [-] This item appears only when you set the Offset Voltage item to a value other than [Auto]. [+] To offset the voltage by a positive value. [-] To offset the voltage by a negative value. Fixed Voltage [Auto] This item appears only when you set the CPU Voltage Mode item to [Manual] and allows you to set a fixed CPU voltage. The values range from 0.85V to 1.7V with a 0.00625V interval. Refer to the CPU documentation before setting the CPU Vcore voltage. Setting a high VCore voltage may damage the CPU permanently, and setting a low VCore voltage may make the system unstable. 3.5.18 IMC Voltage [Auto] Allows you to set the CPU Integrated Memory Controller voltage. The values range from 1.1V to 1.7V with a 0.00625V interval. 3.5.19 DRAM Voltage [Auto] Allows you to set the DRAM voltage. The values range from 1.20V to 2.5V* with a 0.0125V interval. • The value [2.5V] of the DRAM Voltage item is supported only if the OV_DRAM switch is enabled. Otherwise the maximum voltage supported is [2.0V]. This item can be automatically optimized if you install a XMP DIMM. Refer to 4. DRAM overvoltage setting switch on page 2-26 for details. • According to Intel CPU spec, DIMMs with voltage requirement over 1.65V may damage the CPU permanently. We recommend you install the DIMMs with the voltage requirement below 1.65V. Chapter 3 3-20 Chapter 3: BIOS setup

Section	Page
Contents	3
Notices	8
Safety information	9
About this guide	10
P7P55D-E EVO specifications summary	12
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 ASUS Xtreme Design—Hybrid Processor	16
1.3.3 ASUS Xtreme Design—16 Hybrid Phase*	17
1.3.4 ASUS Xtreme Design—Hybrid OS	17
1.3.5 ASUS Exclusive Features	17
Chapter 2: Hardware information	19
2.1 Before you proceed	19
2.2 Motherboard overview	20
2.2.1 Motherboard layout	20
2.2.2 Layout contents	21
2.2.3 Placement direction	22
2.2.4 Screw holes	22
2.3 Central Processing Unit (CPU)	23
2.3.1 Installing the CPU	23
2.3.2 Installing the CPU heatsink and fan	26
2.3.3 Uninstalling the CPU heatsink and fan	27
2.4 System memory	28
2.4.1 Overview	28
2.4.2 Memory configurations	29
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	40
2.5.6 PCI Express 2.0 x16 slots	40
2.6 Onboard switches	42
2.7 Connectors	45
2.7.1 Rear panel connectors	45
2.7.2 Audio I/O connections	46
2.7.3 Internal connectors	49
2.7.4. ASUS Q-Connector (system panel)	58
2.8 Onboard LEDs	59
2.9 Starting up for the first time	60
2.10 Turning off the computer	60
Chapter 3: BIOS setup	61
3.1 Knowing BIOS	61
3.2 Updating BIOS	61
3.2.1 ASUS Update utility	62
3.2.2 ASUS EZ Flash 2 utility	64
3.2.3 ASUS CrashFree BIOS 3 utility	65
3.2.4 ASUS BIOS Updater	66
3.3 BIOS setup program	69
3.3.1 BIOS menu screen	69
3.3.2 Menu bar	69
3.3.3 Navigation keys	70
3.3.4 Menu items	70
3.3.5 Submenu items	70
3.3.6 Configuration fields	70
3.3.7 Pop-up window	70
3.3.8 Scroll bar	70
3.3.9 General help	70
3.4 Main menu	71
3.4.1 SATA 1–6	71
3.4.2 Storage Configuration	73
3.4.3 AHCI Configuration	74
3.4.4 System Information	74
3.5 Ai Tweaker menu	75
3.5.1 CPU Level Up [Auto]	75
3.5.2 Ai Overclock Tuner [Auto]	76
3.5.3 CPU Ratio Setting [Auto]	77
3.5.4 Intel(R) SpeedStep(TM) Tech [Enabled]	77
3.5.5 Intel(R) TurboMode Tech [Enabled]	77
3.5.6 Xtreme Phase Full Power Mode [Auto]	77
3.5.7 BCLK Frequency [XXX]	77
3.5.8 PCIE Frequency [XXX]	77
3.5.9 DRAM Frequency [Auto]	77
3.5.10 QPI Frequency [Auto]	77
3.5.11 ASUS/3rd Party UI Priority [ASUS Utility]	78
3.5.12 OC Tuner [Good Performance]	78
3.5.13 Start auto tuning	78
3.5.14 DRAM Timing Control	78
3.5.15 CPU Differential Amplitude [Auto]	80
3.5.16 CPU Clock Skew [Auto]	80
3.5.17 CPU Voltage Mode [Offset]	80
3.5.18 IMC Voltage [Auto]	80
3.5.19 DRAM Voltage [Auto]	80
3.5.20 CPU PLL Voltage [Auto]	81
3.5.21 PCH Voltage [Auto]	81
3.5.22 DRAM DATA REF Voltage on CHA/B [Auto]	81
3.5.23 Load-Line Calibration [Auto]	81
3.5.24 CPU Spread Spectrum [Auto]	81
3.5.25 PCIE Spread Spectrum [Auto]	81
3.6 Advanced menu	82
3.6.1 CPU Configuration	82
3.6.2 Uncore Configuration	84
3.6.3 Onboard Devices Configuration	85
3.6.4 USB Configuration	86
3.6.5 PCIPnP	87
3.6.6 Intel VT-d [Disabled]	87
3.6.7 T.Probe [Enabled]	87
3.7 Power menu	88
3.7.1 Suspend Mode [Auto]	88
3.7.2 Repost Video on S3 Resume [No]	88
3.7.3 ACPI 2.0 Support [Disabled]	88
3.7.4 ACPI APIC Support [Enabled]	88
3.7.5 EuP Ready [Disabled]	88
3.7.6 APM Configuration	89
3.7.7 Hardware Monitor	90
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 AI NET 2	97
3.9.3 ASUS EZ Flash 2	98
3.9.4 Express Gate [Auto]	98
3.10 Exit menu	99
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 AI Suite	104
4.3.3 ASUS Fan Xpert	105
4.3.4 ASUS EPU	106
4.3.5 ASUS Express Gate	107
4.3.6 VIA® High Definition Audio utility	108
4.3.7 ASUS T.Probe	109
4.3.8 Intel® Extreme Tuning Utility	110
4.4 RAID configurations	111
4.4.1 RAID definitions	111
4.4.2 Installing Serial ATA hard disks	112
4.4.3 Setting the RAID item in BIOS	112
4.4.4 Intel® Matrix Storage Manager option ROM utility	112
4.5 Creating a RAID driver disk	116
4.5.1 Creating a RAID driver disk without entering the OS	116
4.5.2 Creating a RAID driver disk in Windows®	116
4.5.3 Installing the RAID driver during Windows® OS installation	116
4.5.4 Using a USB floppy disk drive	117
Chapter 5: Multiple GPU technology support	119
5.1 ATI® CrossFireX™ technology	119
5.1.1 Requirements	119
5.1.2 Before you begin	119
5.1.3 Installing two CrossFireX™ graphics cards	120
5.1.4 Installing the device drivers	121
5.1.5 Enabling the ATI® CrossFireX™ technology	121
5.2 NVIDIA® SLI™ technology	122
5.2.1 Requirements	122
5.2.2 Installing two SLI-ready graphics cards	122
5.2.3 Installing the device drivers	123

Match case Limit results 1 per page

3-20

Chapter 3: BIOS setup

Chapter 3

3.5.15

CPU Differential Amplitude [Auto]

Different AMP might enhance BCLK overclocking ability.

Conﬁguration options: [Auto] [700mV] [800mV] [900mV] [1000mV]

3.5.16

CPU 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]

Some of the following items are adjusted by typing the desired values using the numeric keypad

and press the <Enter> key. You can also use the <+> and <-> keys to adjust the value. To

restore the default setting, type [auto] using the keyboard and press the <Enter> key.

3.5.17

CPU Voltage Mode [Offset]

Allows you to set the CPU Voltage Mode. Different sub-items appear according to the

CPU

Voltage Mode

item setting. Conﬁguration options: [Offset] [Manual]

Offset Voltage [Auto]

This item appears only when you set the

CPU Voltage Mode

item to [Offset] and allows you to

set the Offset voltage. The values range from 0.00625V to 0.50000V with a 0.00625V interval.

Offset Sign [-]

This item appears only when you set the

Offset Voltage

item to a value other than [Auto].

[+]

To offset the voltage by a positive value.

[–]

To offset the voltage by a negative value.

Fixed Voltage [Auto]

This item appears only when you set the

CPU Voltage Mode

item to [Manual] and allows you

to set a ﬁxed CPU voltage. The values range from 0.85V to 1.7V with a 0.00625V interval.

Refer to the CPU documentation before setting the CPU Vcore voltage. Setting a high

VCore voltage may damage the CPU permanently, and setting a low VCore voltage may

make the system unstable.

3.5.18

IMC Voltage [Auto]

Allows you to set the CPU Integrated Memory Controller voltage. The values range from 1.1V

to 1.7V with a 0.00625V interval.

3.5.19

DRAM Voltage [Auto]

Allows you to set the DRAM voltage. The values range from 1.20V to 2.5V* with a 0.0125V interval.

•

The value [2.5V] of the

DRAM Voltage

item is supported only if the

OV_DRAM

switch

is enabled. Otherwise the maximum voltage supported is [2.0V]. This item can be

automatically optimized if you install a XMP DIMM. Refer to

4. DRAM overvoltage

setting

switch on page 2-26 for details.

•

According to Intel CPU spec, DIMMs with voltage requirement over 1.65V may

damage the CPU permanently. We recommend you install the DIMMs with the voltage

requirement below 1.65V.