Asus Maximus VIII Hero User Manual page 88

When the Ai Overclock Tuner is set to [Manual] or [XMP], the following items appear.
BCLK Frequency [100]
This item allows you to set the BCLK (base clock) frequency to enhance the system
performance. Use the <+> or <-> to adjust the value. The values range from 40.0 MHz
to 500.0 MHz.
Initial BCLK Frequency [Auto]
This item allows you to set the initial BCLK (base clock) frequency to start overclocking
from the assigned BCLK frequency.
Configuration options: [Auto] [40.0 MHz] – [500.0 MHz]
When Ai Overclock Tuner is set to [XMP], the XMP mode supported by the installed
memory module is displayed.
BCLK Amplitude [Auto]
This item allows you to set the magnitude of the base clock driven for the processor.
Configuration options: [Auto] [700mV] [800mV] [900mV] [1000mV]
BCLK Slew Rate [Auto]
This item allows you to set the speed at which each clock rises and falls.
Configuration options: [Auto] [1.5V/ns] [2.5V/ns] [3.5V/ns] [4.5V/ns]
BCLK Spread Spectrum [Auto]
This item allows you to reduce the EMI. Disable to get more accurate base clocks.
Configuration options: [Auto] [Disabled] [-0.22] [-0.34] [-0.46] [+0.12] [+0.22] [+0.28] [+0.38]
[+0.17]
BCLK Frequency Slew Rate
This item allows you to set frequency update rate. Lower values speed up clock changes.
Configuration options: [Auto] [Disable] [32us/MHz] [64us/MHz] [128us/MHz] [512us/MHz]
ASUS MultiCore Enhancement [Auto]
[Auto]
[Disabled]
CPU Core Ratio [Auto]
This item allows you to set the CPU core ratio limit per core or synchronize automatically to
all cores.
Configuration options: [Auto] [Sync All Cores] [Per Core]
3-12
This item allows you to maximize the oveclocking performance optimized
by ASUS core ratio settings.
This item allows you to set to default core ratio settings.
Chapter 3: BIOS Setup