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CPU Fan Speed [xxxx RPM] or [Ignore] / [N/A] CPU OPT Speed [xxxx RPM] or [Ignore] / [N/A] Chassis Fan 1/2/3/4 Speed [xxxx RPM] or [Ignore] / [N/A] The onboard hardware monitor automatically detects and displays the CPU, CPU OPT, and chassis fan speed in rotations per minute (RPM). If the fan is not connected to the motherboard, the field shows N/A. Select Ignore if you do not wish to display the detected speed. CPU Q-Fan Control [Enabled] [Disabled] Disables the CPU Q-Fan control feature. [Enabled] Enables the CPU Q-Fan control feature. CPU Fan Speed Low Limit [600 RPM] This item appears only when you enable the CPU Q-Fan Control feature and allows you to disable or set the CPU fan warning speed in case the fan stops working. Configuration options: [Ignore] [200 RPM] [300 RPM] [400 RPM] [500 RPM] [600 RPM] CPU Fan Profile [Standard] This item appears only when you enable the CPU Q-Fan Control feature and allows you to set the appropriate performance level of the CPU fan. [Standard] The CPU fan will automatically adjust depending on the CPU temperature [Silent] Minimizes the fan speed for quiet CPU fan operation [Turbo] Achieves maximum CPU fan speed [Manual] Users can assign detailed fan speed control parameters The following four items appear only when you set CPU Fan Profile to [Manual]. CPU Upper Temperature [70] (in celsius) Use the and keys to set the upper limit of the CPU temperature. T��h�e��v�a�l�u�e�s��r�a�n�g�e��f�ro��m� 20°C to 75°C. �W��h�e�n��th��e��C�P��U��te��m��p�e�r�a�t�u�r�e�r�e�a��c�h�e�s��th��e��u�p�p�e�r��li�m��it�,�C��P�U��f�a�n��w�i�ll��o�p�e�r�a�t�e��a�t maximum duty cycle in full speed. CPU Fan Max. Duty Cycle (%) [100] Use the and keys to adjust the maximum CPU fan duty cycle. The values range from 0% to 100%. The minimum value cannot be lower than the setting of the Min. Duty Cycle. CPU Lower Temperature [20] (in celsius) Displays the lower limit of the CPU temperature. Users can set the CPU Fan Min. Duty Cycle when CPU temperature is lower than the CPU Lower Temperature setting. CPU Fan Min. Duty Cycle (%) [20] Use the and keys to adjust the�m��i�n�im��u�m��C��P�U��fa�n��d�u�t�y��c�y�c�le�.��T�h�e��v�a�l�u�e�s��ra�n��g�e��fr�o�m��0��%� to 100%. �W�h��e�n�t�h�e��C�P��U��te�m��p�e�r�a�t�u�r�e�i�s�u��n�d�e�r�2�0��°�C�,�t�h�e��C��P�U��f�a�n��w��il�l�o�p�e��ra��te��a�t��th��e�m��i�n�i�m�u��m� duty cycle. Chassis 1/2/3/4 Q-Fan Control [Enabled] [Disabled] Disables the Chassis Q-Fan control feature. [Enabled] Enables the Chassis Q-Fan control feature. Chapter 3 ASUS P9X79 WS 3-41

Section	Page
Contents	3
Notices	7
Safety information	9
About this guide	10
P9X79 WS specifications summary	12
Chapter 1: Product introduction	17
1.1 Welcome!	19
1.2 Package contents	19
1.3 Special features	20
1.3.1 Product highlights	20
1.3.2 ASUS Workstation Exclusive Features	21
1.3.3 ASUS features	22
1.3.4 Other special features	26
Chapter 2: Hardware information	27
2.1 Before you proceed	29
2.2 Motherboard overview	30
2.2.1 Motherboard layout	30
2.2.2 Layout contents	31
2.2.3 Central Processing Unit (CPU)	32
2.2.4 System memory	33
2.2.5 Expansion slots	35
2.2.6 Onboard switches	37
2.2.7 Onboard LEDs	40
2.2.8 Jumper	49
2.2.9 Internal connectors	51
2.3 Building your computer system	63
2.3.1 Additional tools and components to build a PC system	63
2.3.2 CPU installation	64
2.3.3 CPU heatsink and fan assembly installation	66
2.3.4 DIMM installation	67
2.3.5 Motherboard installation	68
2.3.6 ATX Power connection	70
2.3.7 SATA device connection	71
2.3.8 Front I/O Connector	72
2.3.9 Rear panel connection	73
2.3.10 Audio I/O connections	74
2.3.11 USB BIOS Flashback	77
2.4 Starting up for the first time	78
2.5 Turning off the computer	79
Chapter 3: BIOS setup	81
3.1 Knowing BIOS	81
3.2 BIOS setup program	81
3.2.1 EZ Mode	82
3.2.2 Advanced Mode	83
3.3 Main menu	85
3.4 Ai Tweaker menu	87
3.4.1 DRAM Timing Control	90
3.4.1 DIGI+ Power Control	100
3.4.2 CPU Performance Settings	104
3.5 Advanced menu	109
3.5.1 CPU Configuration	110
3.5.2 CPU Power Management Configuration	111
3.5.3 System Agent Configuration	112
3.5.4 PCH Configuration	113
3.5.5 SATA Configuration	113
3.5.6 USB Configuration	116
3.5.7 Onboard Devices Configuraton	117
3.5.8 APM	119
3.6 Monitor menu	120
3.7 Boot menu	123
3.8 Tools menu	124
3.8.1 ASUS EZ Flash 2 Utility	125
3.8.2 ASUS DRAM SPD Information	125
3.8.3 ASUS O.C. Profile	126
3.8.4 ASUS Drive Xpert	127
3.9 Exit menu	128
3.10 Updating BIOS	129
3.10.1 ASUS Update utility	129
3.10.2 ASUS EZ Flash 2 utility	132
3.10.3 ASUS CrashFree BIOS 3 utility	133
3.10.4 ASUS BIOS Updater	134
Chapter 4: Software support	137
4.1 Installing an operating system	137
4.2 Support DVD information	137
4.2.1 Running the support DVD	137
4.2.2 Obtaining the software manuals	138
4.3 Software information	139
4.3.1 AI Suite II	139
4.3.2 TurboV EVO	140
4.3.3 DIGI+ Power Control	144
4.3.4 EPU	146
4.3.5 FAN Xpert+	147
4.3.6 Probe II	148
4.3.7 Sensor Recorder	149
4.3.8 USB 3.0 Boost	150
4.3.9 ASUS SSD Caching	151
4.3.10 ASUS Update	152
4.3.11 MyLogo2	153
4.3.12 Audio configurations	155
4.4 RAID configurations	156
4.4.1 RAID definitions	156
4.4.2 Installing Serial ATA hard disks	157
4.4.3 Setting the RAID item in BIOS	157
4.4.4 Intel® Rapid Storage Technology Option ROM utility	157
4.4.5 Marvell RAID utility	161
4.5 Creating a RAID driver disk	165
4.5.1 Creating a RAID driver disk without entering the OS	165
4.5.2 Creating a RAID driver disk in Windows®	165
4.5.3 Installing the RAID driver during Windows® OS installation	166
4.5.4 Using a USB floppy disk drive	167
Chapter 5: Multiple GPU technology support	169
5.1 ATI® CrossFireX™ technology	171
5.1.1 Requirements	171
5.1.2 Before you begin	171
5.1.3 Installing CrossFireX graphics cards	172
5.1.4 Installing the device drivers	173
5.1.5 Enabling the ATI® CrossFireX™ technology	173
5.2 NVIDIA® SLI™ technology	175
5.2.1 Requirements	175
5.2.2 Installing two SLI-ready graphics cards	176
5.2.3 Installing three SLI-ready graphics cards	177
5.2.4 Installing four SLI-ready graphics cards	178
5.2.5 Installing the device drivers	179
5.2.6 Enabling the NVIDIA® SLI™ technology	179
5.3 NVIDIA® CUDA™ technology	182
5.3.1 Requirements	182

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ASUS P9X79 WS

3-41

Chapter 3

CPU Fan Speed [xxxx RPM] or [Ignore] / [N/A]

CPU OPT Speed [xxxx RPM] or [Ignore] / [N/A]

Chassis Fan 1/2/3/4 Speed [xxxx RPM] or [Ignore] / [N/A]

The onboard hardware monitor automatically detects and displays the CPU, CPU OPT,

and chassis fan speed in rotations per minute (RPM). If the fan is not connected to the

motherboard, the ﬁeld shows

N/A

. Select

Ignore

if you do not wish to display the detected

speed.

CPU Q-Fan Control [Enabled]

[Disabled]

Disables the CPU Q-Fan control feature.

[Enabled]

Enables the CPU Q-Fan control feature.

CPU Fan Speed Low Limit [600 RPM]

This item appears only when you enable the

CPU Q-Fan Control

feature and allows you to

disable or set the CPU fan warning speed in case the fan stops working.

Conﬁguration options: [Ignore] [200 RPM] [300 RPM] [400 RPM] [500 RPM] [600 RPM]

CPU Fan Profile [Standard]

This item appears only when you enable the

CPU Q-Fan Control

feature and allows

you to set the appropriate performance level of the CPU fan.

[Standard]

The CPU fan will automatically adjust depending on the CPU temperature

[Silent]

Minimizes the fan speed for quiet CPU fan operation

[Turbo]

Achieves maximum CPU fan speed

[Manual]

Users can assign detailed fan speed control parameters

The following four items appear only when you set

CPU Fan Proﬁle

to [Manual].

CPU Upper Temperature [70] (in celsius)

Use the <+> and <-> keys to set the upper limit of the CPU temperature. The values range from

The values range from

20°C to 75°C. When the CPU temperature reaches the upper limit, CPU fan will operate at

When the CPU temperature reaches the upper limit, CPU fan will operate at

maximum duty cycle in full speed.

CPU Fan Max. Duty Cycle (%) [100]

Use the <+> and <-> keys to adjust the maximum CPU fan duty cycle. The values range from

0% to 100%. The minimum value cannot be lower than the setting of the Min. Duty Cycle.

CPU Lower Temperature [20] (in celsius)

Displays the lower limit of the CPU temperature. Users can set the CPU Fan Min. Duty Cycle

when CPU temperature is lower than the CPU Lower Temperature setting.

CPU Fan Min. Duty Cycle (%) [20]

Use the <+> and <-> keys to adjust the minimum CPU fan duty cycle. The values range from 0%

minimum CPU fan duty cycle. The values range from 0%

The values range from 0%

to 100%. When the CPU temperature is under 20�C, the CPU fan will operate at the minimum

When the CPU temperature is under 20°C, the CPU fan will operate at the minimum

duty cycle.

Chassis 1/2/3/4 Q-Fan Control [Enabled]

[Disabled]

Disables the Chassis Q-Fan control feature.

[Enabled]

Enables the Chassis Q-Fan control feature.