Asus Z170-WS Manual page 92

If you assign a value for more Core Ratio Limit, do not set the less Core Ratio Limit to
[Auto].
BCLK Frequency : DRAM Frequency Ratio [Auto]
[Auto]
[100:133]
[100:100]
DRAM Odd Ratio Mode [Enabled]
This item allows you to enable or disable the odd ratio mode for better granularity.
Configuration options: [Disabled] [Enabled]
DRAM Frequency [Auto]
This item allows you to set the memory operating frequency. The configurable options vary
with the BCLK (base clock) frequency setting. Select the auto mode to apply the optimized
setting.
Configuration options: [Auto] [DDR4-800MHz] - [DDR4-4266MHz]
TPU [Keep Current Settings]
This item allows you to automatically overclock the CPU and DRAM frequencies and voltage
for an enhanced system performance.
[Keep Current Settings] Keep the current settings without changing anything.
[TPU I]
[TPU II]
Ensure to use water cooling device before selecting [TPU II].
EPU Power Saving Mode [Disabled]
The ASUS EPU (Energy Processing Unit) sets the CPU in its minimum power consumption
settings.
Configuration options: [Disabled] [Enabled]
CPU SVID Support
Disable this item to stop the CPU from communicating with the external voltage regulator.
Configuration options: [Auto] [Disabled] [Enabled]
3-18
4-Core Ratio Limit [Auto]
Select [Auto] to apply the CPU default Turbo Ratio setting or manually
assign a 4-Core Limit value that must be higher than or equal to the 3-Core
Ratio Limit.
The BCLK frequency to DRAM frequency ratio will be set to the optimized
setting.
The BCLK frequency to DRAM frequency ratio will be set to 100:133.
The BCLK frequency to DRAM frequency ratio will be set to 100:100.
Applies air cooling overclocking conditions.
Applies water cooling overclocking conditions.
Chapter 3: BIOS Setup