Instruction Manual
Table Of Contents
- Contents
- Chapter 1 Product introduction
- Chapter 2 BIOS setup
- 2.1 Managing and updating your BIOS
- 2.2 BIOS setup program
- 2.3 Main menu
- 2.4 Ai Tweaker menu
- 2.4.1 AI Overclocking [Auto]
- 2.4.2 DRAM Frequency Control [Auto]
- 2.4.3 HT Link Speed [Auto]
- 2.4.4 CPU Voltage [Auto]
- 2.4.5 CPU/NB Voltage [Auto]
- 2.4.6 CPU VDDA Voltage [Auto]
- 2.4.7 DRAM Voltage [Auto]
- 2.4.8 HT Voltage [Auto]
- 2.4.9 NB Voltage [Auto]
- 2.4.10 CPU/LDT Spread Spectrum [Disabled]
- 2.4.11 PCIE Spread Spectrum [Disabled]
- 2.4.12 SATA Spread Spectrum [Disabled]
- 2.4.13 PCI Spread Spectrum [Disabled]
- 2.5 Advanced menu
- 2.6 Power menu
- 2.7 Boot menu
- 2.8 Tools menu
- 2.9 Exit menu

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ASUS M4N78 PRO
Conguration options: [Auto] [DCT 0] [DCT 1] [Both]
The following sub-items appear only when you set the DQS Timing User Controls item to
[DCT 0], [DCT 1] or [Both].
CKE Setup Time [Auto]
Allows selection of the default setup time for the CKE pins versus MEMCLK.
Conguration options: [Auto] [1/2 CLK] [1 CLK]
CKE Fine Delay [00]
Appears only when you set the CKE Setup Time item to [1/2 CLK] or [1 CLK]. Allows you to set
how long the CKE pins are delayed from the default setup time. Type the desired values using
the numeric keypad and press the <Enter> key. You can also use the <+> and <-> keys to adjust
the value. The value ranges from 0 to 31.
CS/ODT Setup Time [Auto]
Allows selection of the default setup time for the CS/ODT pins versus MEMCLK.
Conguration options: [Auto] [1/2 CLK] [1 CLK]
CS/ODT Fine Delay [00]
Appears only when you set the CS/ODT Setup Time item to [1/2 CLK] or [1 CLK]. Allows you to
set how long the CS/ODT pins are delayed from the default setup time. Type the desired values
using the numeric keypad and press the <Enter> key. You can also use the <+> and <-> keys to
adjust the value. The value ranges from 0 to 31.
Addr/Cmd Setup Time [Auto]
Allows selection of the default setup time for the Addr/Cmd pins versus MEMCLK.
Conguration options: [Auto] [1/2 CLK] [1 CLK]
Addr/Cmd Fine Delay [00]
Appears only when you set the CKE Setup Time item to [1/2 CLK] or [1 CLK]. Allows you to set
how long the Addr/Cmd pins are delayed from the default setup time. Type the desired values
using the numeric keypad and press the <Enter> key. You can also use the <+> and <-> keys to
adjust the value. The value ranges from 0 to 31.
The following six (6) 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.
2.4.4 CPU Voltage [Auto]
Allows you to set the CPU voltage.
2.4.5 CPU/NB Voltage [Auto]
Allows you to set the voltage between the CPU and Northbridge.
The following four (4) items appear only when you set the Ai Overclocking item to
[Manual].
2.4.6 CPU VDDA Voltage [Auto]
Allows you to set the CPU VDDA voltage. The values range from 2.50V to 2.80V with a 0.10V
interval.