User's Manual
Table Of Contents
- Contents
- Chapter 1: Product introduction
- Chapter 2: Hardware information
- Chapter 3: Powering up
- Chapter 4: BIOS setup
- 4.1 Managing and updating your BIOS
- 4.2 BIOS setup program
- 4.3 Main menu
- 4.4 Ai Tweaker menu
- 4.4.1 Ai Overclock Tuner [Auto]
- 4.4.2 CPU Ratio Setting [Auto]
- 4.4.3 FSB Strap to North Bridge [Auto]
- 4.4.4 DRAM Frequency [Auto]
- 4.4.5 DRAM Command Rate [Auto]
- 4.4.6 DRAM CMD Skew on Channel A/B [Auto]
- 4.4.7 DRAM CLK Skew on Channel A/B [Auto]
- 4.4.8 DRAM Timing Control [Auto]
- 4.4.9 DRAM Static Read Control [Auto]
- 4.4.10 DRAM Dynamic Write Control [Auto]
- 4.4.11 Ai Clock Twister [Auto]
- 4.4.12 Ai Transaction Booster [Auto]
- 4.4.13 CPU Voltage [Auto]
- 4.4.14 CPU PLL Voltage [Auto]
- 4.4.15 FSB Termination Voltage [Auto]
- 4.4.16 DRAM Voltage [Auto]
- 4.4.17 NB Voltage [Auto]
- 4.4.18 SB Voltage [Auto]
- 4.4.19 Clock Over-Charging Voltage [Auto]
- 4.4.20 Load-Line Calibration [Auto]
- 4.4.21 CPU GTL Voltage Reference [Auto]
- 4.4.22 NB GTL Voltage Reference [Auto]
- 4.4.23 CPU Spread Spectrum [Auto]
- 4.4.24 PCIE Spread Spectrum [Auto]
- 4.5 Advanced menu
- 4.6 Power menu
- 4.7 Boot menu
- 4.8 Tools menu
- 4.9 Exit menu
- Chapter 5: Software support
- Chapetr 6: ATI® CrossFire™ technology support
- Appendix: CPU features

4-20 Chapter 4: BIOS setup
4.4.6 DRAM CMD Skew on Channel A/B [Auto]
These items are adjustable only when you set the DRAM Command Rate item to
[1N] and may help enhancing DRAM stability on 1N mode.
Conguration options: [Auto] [Advance 175ps] [Advance 150ps] [Advance 125ps]
[Advance 100ps] [Advance 75ps] [Advance 50ps] [Advance 25ps] [Normal] [Delay
25ps] [Delay 50ps] [Delay 75ps] [Delay 100ps] [Delay 125ps] [Delay 150ps] [Delay
175ps]
4.4.7 DRAM CLK Skew on Channel A/B [Auto]
Adjusting these items may help enhancing DRAM overclocking ability.
Conguration options: [Auto] [Advance 350ps] [Advance 300ps] [Advance 250ps]
[Advance 200ps] [Advance 150ps] [Advance 100ps] [Advance 50ps] [Normal]
[Delay 50ps] [Delay 100ps] [Delay 150ps] [Delay 200ps] [Delay 250ps] [Delay
300ps] [Delay 350ps]
4.4.8 DRAM Timing Control [Auto]
Conguration options: [Auto] [Manual]
• The following sub-items apprear only when you set the DRAM Timing
Control item to [Manual].
• The conguration options for some of the following items vary depending
on the DIMMs you install on the motherboard.
1st Information: 6-6-6-15-4-36-6-4
The values vary depending on your settings of the following sub-items:
CAS# Latency [ 5 DRAM Clocks]
Conguration options: [ 4 DRAM Clocks] [ 5 DRAM Clocks] [ 6 DRAM Clocks]
[ 7 DRAM Clocks] [ 8 DRAM Clocks] [ 9 DRAM Clocks] [10 DRAM Clocks] [11
DRAM Clocks]
RAS# to CAS# Delay [ 5 DRAM Clocks]
Conguration options: [ 3 DRAM Clocks] [ 4 DRAM Clocks]~[17 DRAM
Clocks] [18 DRAM Clocks]
RAS# PRE Time [ 5 DRAM Clocks]
Conguration options: [ 3 DRAM Clocks] [ 4 DRAM Clocks]~[17 DRAM
Clocks] [18 DRAM Clocks]
RAS# ACT Time [15 DRAM Clocks]
Conguration options: [ 3 DRAM Clocks] [ 4 DRAM Clocks]~[33 DRAM
Clocks] [34 DRAM Clocks]
RAS# to RAS# Delay [Auto]
Conguration options: [Auto] [ 1 DRAM Clocks]~[15 DRAM Clocks]