It is validated by 3 users. [URL]
According to the setup and specifications for the Dell G5 5090 it says there is support for the i9-9900k CPU, but nothing about the 9900kf version. I was wondering if the 9900kf would be supporting even though it is not directly listed in the manual.  [URL] Sorry if this post is in the wrong support section, I couldn't find a section dedicated to the dell g5 5090.
Dell G5 5090 i9-9900kf cpu support?