I have 9360 with i5-7200U. I've just checked, fan kicks in after 90 seconds of sha1sum /dev/zero and stays always on lowest RPMs. 25C ambient. With 50% core load at 3.1GHz it stays silent most of the time...
50% at 3.1GHZ would make for one noisy experience here. Either mine's a lemon, or, more likely, there's no way to get a CPU like the i7-8550U into such a small case without causing thermal issues.