Question Is it worth enabling Dynamic Memory Boost ?

[steve489]

My new Asus Z790 board has a BIOS option for "Dynamic Memory Boost" to switch between the standard RAM speed and XMP profile speed for more demanding applications. Is this worth using to save a small amount of power and reduce temperature or is it just inviting problems?

 

[kerberos_20]

there should be no problems as long your XMP has no memtest errors, GPUs downclocking RAM all the time without issues, i see no reason why CPU wouldnt be able to do same

 

[steve489]

there should be no problems as long your XMP has no memtest errors, GPUs downclocking RAM all the time without issues, i see no reason why CPU wouldnt be able to do same

I just tried it anyway. On exiting the BIOS the PC was just stuck with the power light on and didn't restart as normal after changing the BIOS setting. I held down the power button to restart at which point it invited me to enter the BIOS in 'safe mode'. I checked Dynamic Memory Boost was set then rebooted OK into Windows, but the Cinebench score was somewhat lower. I decided due to the instability and poorer performance to disable Dynamic Memory Boost as a poorly engineered feature. Never mind.

All I have set now in the BIOS different from the defaults is:

• CPU thermal limit of 85C
• Enabled the XMP profile
• Disabled Fast Boot
• Defined the fan curves