Asus M4A78 User Manual - Page 52

2-12

ASUS M4A78

tWRWR [ Auto]

Allows you to specify the Twrwr time. Configuration options: [Auto] [0 CLK] [1 CLK] [2

CLK] [3 CLK]

tRDRD [ Auto]

Allows you to specify the Trdrd time. Configuration options: [Auto] [2 CLK] [3 CLK] [4

CLK] [5 CLK]

tRFC0/1/2/3[ Auto]

Allows you to specify the Trfc0/1/2/3 time. Configuration options: [Auto] [75ns] [105ns]

[127.5ns] [195ns] [327.5ns]

Memory Over Voltage [Auto]

Allows you to set the memory over voltage. The value ranges from 1.85000V to 2.24375V

with a 0.00625V interval. Configuration options: [Auto]

Chipset Over Voltage [Auto]

Allows you to set the chipset over voltage. Configuration options: [Auto] [+50mv] [+100mv]

[+150mv]

2.4.2

CPU Configuration

The items in this menu show the CPU-related information that the BIOS automatically

detects.

GART Error Reporting [Disabled]

This option should remain disabled for the normal operation. The driver developer may

enable it for testing purpose. Configuration options: [Disabled] [Enabled]

Microcode Updation [Enabled]

Allows you to enable or disable the microcode updation. Configuration options: [Disabled]

[Enabled]

Secure Virtual Machine Mode [Enabled]

Allows you to enable or disable the AMD Secure Virtual Machine mode. Configuration

options: [Disabled] [Enabled]

Cool ‘n’ Quiet [Enabled]

Allows you to enable or disable the generation of ACPI_PPC, _PSS, and _PCT objects.

Configuration options: [Disabled] [Enabled]

CPU Prefetching [Enabled]

Allows you to enable or disable the CPU prefetching. Configuration options: [Enabled]

[Disabled]

C1E Configuration [Disabled]

Allows you to enable or disable C1E Dual-Core related CPU power State. Configuration

options: [Disabled] [Auto]

Section	Page
M4A78 specifications summary	9
Chapter 1	11
1.1 Welcome!	11
1.2 Package contents	11
1.3 Special features	11
1.3.1 Product highlights	11
1.3.2 Innovative ASUS features	13
1.4 Before you proceed	15
Onboard LED	15
1.5 Motherboard overview	16
1.5.1 Placement direction	16
1.5.2 Screw holes	16
1.5.3 Motherboard layout	17
1.5.4 Layout contents	17
1.6 Central Processing Unit (CPU)	18
1.6.1 Installing the CPU	18
1.6.2 Installing the heatsink and fan	20
1.7 System memory	21
1.7.1 Overview	21
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 slot	28
1.8.5 PCI Express x16 slot	28
1.9 Jumpers	29
1.10 Connectors	31
1.10.1 Rear panel connectors	31
1.10.2 Internal connectors	33
1.11 Software support	40
1.11.1 Installing an operating system	40
1.11.2 Support DVD information	40
Chapter 2	41
2.1 Managing and updating your BIOS	41
2.1.1 ASUS Update utility	41
2.1.2 ASUS EZ Flash 2 utility	42
2.1.3 ASUS CrashFree BIOS 3 utility	43
2.2 BIOS setup program	44
2.2.1 BIOS menu screen	45
2.2.2 Menu bar	45
2.2.3 Navigation keys	46
2.2.4 Menu items	46
2.2.5 Submenu items	46
2.2.6 Configuration fields	46
2.2.7 General help	46
2.2.8 Pop-up window	46
2.2.9 Scroll bar	46
2.3 Main menu	47
2.3.1 System Time	47
2.3.2 System Date	47
2.3.3 Primary IDE Master/Slave	47
2.3.4 SATA 1, SATA 2, SATA 3, SATA 5, SATA 6, and ESATA	48
2.3.5 SATA Configuration	49
2.3.6 System Information	49
2.4 Advanced menu	49
2.4.1 JumperFree Configuration	50
2.4.2 CPU Configuration	52
2.4.3 Chipset	53
2.4.4 Onboard Devices Configuration	54
2.4.5 PCI PnP	54
2.4.6 USB Configuration	55
2.5 Power menu	56
2.5.1 Suspend Mode	56
2.5.2 ACPI Support	56
2.5.3 ACPI APIC Support	56
2.5.4 APM Configuration	56
2.5.5 HW Monitor Configuration	57
2.6 Boot menu	58
2.6.1 Boot Device Priority	58
2.6.2 Boot Settings Configuration	58
2.6.3 Security	59
2.7 Tools menu	60
2.7.1 ASUS EZ Flash 2	60
2.7.2 Express Gate [Enabled]	61
2.7.3 AI NET 2	61

Asus M4A78 User Manual - Page 52

CPU Conﬁguration

Page 52 highlights