User’s Manual

ASUS M4A88TD-M 2-15
2.4.3 CPU Ratio [Auto]
Allows you to set the ratio between the CPU Core Clock and the FSB Frequency. Use the
<+> and <-> keys to adjust the ratio. The valid value ranges vary according to your CPU
model.
2.4.4 DRAM Frequency [Auto]
Allows you to set the DDR3 operating frequency. Conguration options: [Auto] [800MHz]
[1067MHz] [1333MHz] [1600MHz]
Selecting a very high DRAM frequency may cause the system to become unstable! If this
happens, revert to the default setting.
2.4.5 CPU/NB Frequency [Auto]
Allows you to set the ratio between the NB Clock and the CPU Bus Frequency. Conguration
options: [Auto] [1400MHz] [1600MHz] [1800MHz] [2000MHz]
2.4.6 HT Link Speed [Auto]
Allows you to select the HyperTransport link speed. Conguration options: [Auto] [200MHz]
[400MHz] [600MHz] [800MHz] [1000MHz] [1200MHz] [1400MHz] [1600MHz] [1800MHz]
[2000MHz]
2.4.7 GPU OverClocking [Auto]
Allows you to congure the GPU overclocking settings. Conguration options: [Auto] [Manual]
GPU Engine Clock [560]
This item appears only when you set the GPU OverClocking item to [Manual] and
allows you to set the GPU Engine Clock. Use the <+> and <-> keys to adjust the value.
You can also key in the desired value using the numeric keypad. The values range
from 150MHz to 2000MHz.
2.4.8 OC Tuner Utility
OC Tuner utility automatically overclocks the frequency and voltage of the CPU and DRAM.
Press <Enter> to start auto tuning. It takes around ve minutes, and the system will reboot for
several times until auto tuning is completed.
2.4.9 DRAM Timing Conguration
The conguration options for some of the following items vary depending on the DIMMs
you install on the motherboard.
DRAM CAS# Latency [Auto]
Conguration options: [Auto] [4 CLK] ~ [12 CLK]
DRAM RAS# to CAS# Delay [Auto]
Conguration options: [Auto] [5 CLK] ~ [12 CLK]