This message was posted on behalf of Intel Corporation
Thank you for contacting us regarding the RAM memory compatibility (requirements) that our Intel® Core™ i3-8100 Processor needs in order to work properly, it will be more than a pleasure to provide you with assistance on this matter.
In this case, installing a memory with 3000MHz is actually higher than the supported MHz by the unit, and this may cause system instability.
Please find out all the information of the processor here:
On the link above you will find pretty much all the basic specifications under the “Memory Specifications” section.
I hope this helps,