AMD Cool & Quiet isn't listed for the ASRock B450M PRO4-F model.
AMD Cool & Quiet isn't listed for the ASRock B450M PRO4-F model.
Ryzen chips lack this capability. Cool and Quiet suits 7th Gen APUs like the A10 9700 with AM4 socket.
Refer to page 61 of the manual at https://download.asrock.com/Manual/B450M Pro4-F.pdf
Only certain Gigabyte boards (possibly AsRock too) kept it in the BIOS with Ryzen chips. It doesn’t work because you change that setting via C-states, which replace the cool and quiet mode for Ryzen. This feature isn’t present on all Asus boards when Ryzen is installed.
I recall what MSI does too! On my 2200G it started as static OC at 3.9GHz and I wasn’t happy about that. Turning on "cool n quiet" lowered the clock during idle. The board has c-states but I haven’t adjusted this setting (it’s usually on or auto). https://www.overclockers.com/forums/show...et-setting On my R5 3600 it actually makes the performance great! Still unsure if it’s an official feature, but it works 
You've noticed those CPU responses because quiet operation isn't optimized for Ryzen processors. They switched to C-States instead. It's clear from certain boards that the original BIOS didn't account for setting changes when Ryzen chips are installed. I'm emphasizing this twice in this post—A10 APU uses cool and quiet, while Ryzen uses C-States. You'll need to dig deeper on your own since I won't repeat this again. Please pass along any helpful articles about the topic. As far as I understand, C&Q technology isn't suitable for Ryzen chips.
Sorry for the delayed response, but I'm not uncovering anything major—just forum discussions that all seem to confirm Ryzen supports it. Some recommend enabling it, others suggest disabling it, which explains why so few have a clear answer. I didn’t find any official documentation from AMD or Ryzen about this.
However, I mentioned something worked on my 2200G: the chip would downclock during idle when overclocked, and others reported similar behavior. It’s possible these settings are intentional or just a quirk.
It seems some board makers might have created their own automatic power management plans, which could be confusing. For example, the 3600 board has limited support for Ryzen 3000, and even then, enabling auto overclocking often caused crashes. On my system, I used MSI AutoTune with a DGPU, which performed better than manual tuning and avoided overvoltage.
It’s possible that certain boards enable these features by default, while others require manual setup. Official support doesn’t always match real-world results.
It performs an action that shouldn't exist, which might trigger c-states. It could also modify the Windows power plan and processor scheduling settings. I'm not sure. My A320M-K has a 220GE installed, and I plan to check the BIOS on Monday for the Cool and Quiet option. I haven't seen it before, especially since I haven't had a 7th generation APU yet. If it's available, I'll enable it.