Asus M4N72-E User Manual - Page 63

Chapter 2: BIOS setup

2-19

Data Cache BG Scrub [Disabled]

Disables or sets the Data Cache BG Scrub. This item allows the L1 Data Cache RAM to be

corrected when idle. Configuration options: [Disabled] [40ns] [80ns] [160ns] [320ns] [640ns]

[1.28us] [2.56us] [5.12us] [10.2us] [20.5us] [41.0us] [81.9us] [163.8us] [327.7us] [655.4us]

[1.31ms] [2.62ms] [5.24ms] [10.49ms] [20.97ms] [42.00ms] [84.00ms]

L2/L3 Cache BG Scrub [Disabled]

Disables or sets the L2/L3 Cache BG Scrub. This item allows the L2/L3 Data Cache RAM to

be corrected when idle. Configuration options: [Disabled] [40ns] [80ns] [160ns] [320ns] [640ns]

[1.28us] [2.56us] [5.12us] [10.2us] [20.5us] [41.0us] [81.9us] [163.8us] [327.7us] [655.4us]

[1.31ms] [2.62ms] [5.24ms] [10.49ms] [20.97ms] [42.00ms] [84.00ms]

SouthBridge Configuration

Hybrid SLI support [Disabled]

Allows you to enable or disable the Hybrid SLI function if you install a Hybrid SLI-support

graphics card. Configuration options: [Auto] [Disable].

Primary Graphics Adapter [PCIe VGA Card First]

Allows you to select which graphics controller to use as the primary boot device.

Configuration options: [PCI VGA Card First] [PCIE VGA Card First]

PCIE training [Gen2 if supported]

Configuration options: [Only Gen1] [Gen2 if supported]

SouthBridge ACPI HPET TABLE [Enabled]

Allows you to enable or disable the southbridge ACPI HPET (High Precision Event Timer).

Configuration options: [Disabled] [Enabled]

2.5.3

Onboard Devices Configuration

Onboard LAN [Enabled]

Allows you to enable or disable the onboard LAN.

Configuration options: [Enabled] [Disabled]

Onboard LAN Boot ROM [Disabled]

Allows you to enable or disable the onboard LAN Boot ROM.


Onboard 1394 [Enabled]

Allows you to enable or disable the onboard 1394 device support.


On-board AUDIO [Enabled]

Allows you to enable or disable the onboard Audio controller.


Front Panel Select [HD Audio]

Allows you to set the front panel audio connector (AAFP) mode to legacy AC’97 or

high-definition audio depending on the audio standard that the front panel audio module

supports. Configuration options: [AC97] [HD Audio]

Section	Page
Contents	3
Notices	6
Safety information	7
About this guide	7
M4N72-E specifications summary	9
Chapter 1 Product introduction	13
1.1 Welcome!	13
1.2 Package contents	13
1.3 Special features	13
1.3.1 Product highlights	13
1.3.2 Innovative ASUS features	14
1.4 Before you proceed	16
1.5 Motherboard overview	17
1.5.1 Placement direction	17
1.5.2 Screw holes	17
1.5.3 Motherboard layout	18
1.5.4 Layout contents	18
1.6 Central Processing Unit (CPU)	19
1.6.1 Installing the CPU	19
1.6.2 Installing the heatsink and fan	20
1.7 System memory	22
1.7.1 Overview	22
1.7.2 Memory configurations	22
1.7.3 Installing a DIMM	27
1.7.4 Removing a DIMM	27
1.8 Expansion slots	28
1.8.1 Installing an expansion card	28
1.8.2 Configuring an expansion card	28
1.8.3 PCI slots	28
1.8.4 PCI Express x1 slots	28
1.8.5 PCI Express x16 slot	28
1.9 Jumpers	29
1.10 Connectors	32
1.10.1 Rear panel connectors	32
1.10.2 Internal connectors	34
1.11 Software support	44
1.11.1 Installing an operating system	44
1.11.2 Support DVD information	44
Chapter 2 BIOS information	45
2.1 Managing and updating your BIOS	45
2.1.1 Creating a bootable floppy disk	45
2.1.2 ASUS Update utility	46
2.1.3 ASUS EZ Flash 2 utility	47
2.1.4 AFUDOS utility	48
2.1.5 ASUS CrashFree BIOS 2 utility	49
2.2 BIOS setup program	50
2.2.1 BIOS menu screen	51
2.2.2 Menu bar	51
2.2.3 Navigation keys	52
2.2.4 Menu items	52
2.2.5 Submenu items	52
2.2.6 Configuration fields	52
2.2.7 General help	52
2.2.8 Pop-up window	52
2.2.9 Scroll bar	52
2.3 Main menu	53
2.3.1 System Time [xx:xx:xx]	53
2.3.2 System Date [Day xx/xx/xxxx]	53
2.3.3 Legacy Diskette A [1.44M, 3.5 in.]	53
2.3.4 Language [English]	53
2.3.5 Primary IDE Master/Slave	53
2.3.6 SATA 1–6	54
2.3.7 Storage Configuration	55
2.3.8 System Information	55
2.4 Ai Tweaker menu	56
2.4.1 AI Overclocking [Auto]	56
2.4.2 DRAM Frequency Control [Auto]	56
2.4.3 HT Link Speed [Auto]	57
2.4.4 CPU Voltage [Auto]	60
2.4.5 CPU/NB Voltage [Auto]	60
2.4.6 CPU VDDA Voltage [Auto]	60
2.4.7 DRAM Voltage [Auto]	60
2.4.8 HT Voltage [Auto]	60
2.4.9 NB Voltage [Auto]	60
2.4.10 NB 1.8V Voltage [Auto]	60
2.4.11 CPU/LDT Spread Spectrum [Disabled]	60
2.4.12 PCIE Spread Spectrum [Disabled]	60
2.4.13 SATA Spread Spectrum [Disabled]	61
2.4.14 PCI Spread Spectrum [Disabled]	61
2.5 Advanced menu	61
2.5.1 CPU Configuration	61
2.5.2 Chipset	62
2.5.3 Onboard Devices Configuration	63
2.5.4 PCIPnP	64
2.5.5 USB Configuration	64
2.6 Power menu	65
2.6.1 Suspend Mode [Auto]	65
2.6.2 Repost Video on S3 Resume [No]	65
2.6.3 ACPI 2.0 Support [Disabled]	65
2.6.4 ACPI APIC support [Enabled]	65
2.6.5 APM Configuration	66
2.6.6 Hardware Monitor	66
2.7 Boot menu	68
2.7.1 Boot Device Priority	68
2.7.2 Boot Settings Configuration	68
2.7.3 Security	69
2.8 Tools menu	70
2.8.1 ASUS EZ Flash 2	70
2.8.2 Express Gate [Enabled]	70
2.8.3 ASUS O.C. Profile	71
2.8.4 AI NET 2	71

Asus M4N72-E User Manual - Page 63

SouthBridge Conﬁguration - idle

Page 63 highlights