So, I figured out one thing. If you want your GPU to be fanless using Afterburner change ONLY PER01 and RPM01 to 0. By doing so, your GPU will maintain it's default or stock fan curve when Afterburner is not in use. I noticed that in Linux or without Afterburner launched fans behave strangely. They are turning on and off continuously when GPU hits 40 degrees or so which is kinda annoying.