Asus M4A87TD/USB3 - Ai Overclock Tuner; CPU Ratio; DRAM Frequency

Chapter 2: BIOS setup 2-15
2.5.3 Ai Overclock Tuner [Auto]
Allows you to select the CPU overclocking options to achieve the desired CPU internal
frequency. Select any of these preset overclocking conguration options:
Manual Allows you to individually set overclocking parameters.
Auto Loads the optimal settings for the system.
D.O.C.P
Allows you to select a DRAM O.C. prole, and the related parameters will be
adjusted automatically.
CPU Level UP
Allows you to select a CPU level, and the related parameters will be adjusted
automatically.
The conguration options for the following sub-items vary depending on the CPU/DIMMs
you install on the motherboard.
OC From CPU Level UP [Auto]
This item appears only when you set the Ai Overclock Tuner item to [Manual] and allows
you to select a CPU level. The related parameters will be automatically adjusted according to
the selected CPU level.
DRAM O.C. Profile [DDR3-1600MHz]
This item appears only when you set the Ai Overclock Tuner item to [D.O.C.P.] and
allows you to select a DRAM O.C. prole, which applies different settings to DRAM
frequency, DRAM timing and DRAM voltage. Conguration options: [DDR3-1600MHz]
[DDR3-1800MHz] [DDR3-1866MHz] [DDR3-2000MHz]
Profile Info : xxxxMHz–x-x-x-xx
This item appears only when you set the Ai Overclock Tuner item to [D.O.C.P.] and
displays the current DRAM prole information. The prole information varies according
to the DRAM O.C. Prole you’ve selected.
CPU Bus Frequency [XXX]
This item appears only when you set the Ai Overclock Tuner item to [Manual] and displaysdisplays
the frequency sent by the clock generator to the system bus and PCI bus. Use the <+> and
<-> keys to adjust the CPU Bus frequency. You can also key in the desired frequency using
the numeric keypad. The values range from 100 to 600.
PCIE Frequency [XXX]
This item appears only when you set the Ai Overclock Tuner item to [Manual] and allowsallows
you to set the PCI Express frequency. Use the <+> and <-> keys to adjust the PCIE
frequency. You can also key in the desired value using the numeric keypad. The values range
from 100 to 150.
2.5.4 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.
2.5.5 DRAM Frequency [Auto]
Allows you to set the DDR3 operating frequency. The conguration options vary with the CPU
Bus Frequency item settings.