Asus M4A78-HTPC User Manual - Page 59

Chapter 2: BIOS setup

2-13

Cool ’n’ Quiet [Enabled]

Enables or disables the AMD Cool’n’Quiet function.

Configuration options: [Disabled] [Enabled]

CPU Prefetching [Enabled]

Allows you to enable or disable CPU prefetching.

Configuration options: [Enabled] [Disabled]

C1E Configuration [Auto]

Allows you to enable or disable the Enhanced Halt State support.

Configuration options: [Auto] [Disabled]

2.4.3

Chipset

The

Chipset

menu allows you to change the advanced chipset settings. Select an item then

press

<Enter>

to display the submenu.

NorthBridge Configuration

Memory Configuration

Bank Interleaving [Auto]

Allows you to enable or disable the bank memory interleaving.

Configuration options: [Disabled] [Auto]

Channel Interleaving [Disabled]

Allows you to set the channel interleaving mode.

Configuration options: [Disabled] [Address bits 6] [Address bits 12] [XOR of Address

bits [20:16, 6] [XOR of Address bits [20:16, 9]]

Enable Clock to All DIMMs [Disabled]

Allows you to enable the unused clocks to all DIMMs even if the memory slots are not

populated. Configuration options: [Disabled] [Enabled]

MemClk Tristate C3/ATLVID [Disabled]

Allows you to enable or disable MemClk Tri-Stating during C3 and Alt VID.


Memory Hole Remapping [Enabled]

Allows you to enable or disable memory remapping around memory hole.


DCT Unganged Mode [Auto]

Allows selection of the unganged DRAM mode.

Configuration options: [Auto] [Always]

Power Down Enable [Enabled]

Allows you to enable or disable the DDR power down mode.


Section	Page
Contents	3
Notices	6
Safety information	7
About this guide	7
M4A78-HTPC 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 slot	28
1.8.4 PCI Express x1 slots	28
1.8.5 PCI Express 2.0 x16 slot	28
1.9 Jumpers	29
1.10 Connectors	30
1.10.1 Rear panel connectors	30
1.10.2 Internal connectors	34
1.11 Software support	43
1.11.1 Installing an operating system	43
1.11.2 Support DVD information	43
1.11.3 ASUS Home Theater Gate	44
Chapter 2 BIOS information	47
2.1 Managing and updating your BIOS	47
2.1.1 ASUS Update utility	47
2.1.2 ASUS EZ Flash 2 utility	48
2.1.3 ASUS CrashFree BIOS 3 utility	49
2.2 BIOS setup program	49
2.2.1 BIOS menu screen	50
2.2.2 Menu bar	50
2.2.3 Navigation keys	51
2.2.4 Menu items	51
2.2.5 Submenu items	51
2.2.6 Configuration fields	51
2.2.7 General help	51
2.2.8 Pop-up window	51
2.2.9 Scroll bar	51
2.3 Main menu	52
2.3.1 System Time [xx:xx:xx]	52
2.3.2 System Date [Day xx/xx/xxxx]	52
2.3.3 Language [English]	52
2.3.4 SATA 1/SATA 3	52
2.3.5 SATA 1–5/ESATA	53
2.3.6 SATA Configuration	54
2.3.7 System Information	54
2.4 Advanced menu	55
2.4.1 JumperFree Configuration	55
2.4.2 CPU Configuration	58
2.4.3 Chipset	59
2.4.4 Onboard Devices Configuration	61
2.4.5 PCIPnP	61
2.4.6 USB Configuration	61
2.5 Power menu	62
2.5.1 Suspend Mode [Auto]	62
2.5.2 ACPI 2.0 Support [Disabled]	63
2.5.3 ACPI APIC Support [Enabled]	63
2.5.4 APM Configuration	63
2.5.5 Hardware Monitor	63
2.6 Boot menu	64
2.6.1 Boot Device Priority	65
2.6.2 Boot Settings Configuration	65
2.6.3 Security	65
2.7 Tools menu	67
2.7.1 ASUS EZ Flash 2	67
2.7.2 Express Gate [Auto]	67
2.7.3 AI NET 2	67

Asus M4A78-HTPC User Manual - Page 59

NorthBridge Conﬁguration

Page 59 highlights