I have a Lenovo Yoga 510 with a core i3; it also has a noisy fan which kicks in sometimes when I'm not even doing anything intensive. It has a 128GB SSD. My Chromebook has no fan and I prefer it that way. Sadly, the Chromebook is ageing with a dodgy power button and I've had to use the laptop more recently. I prefer the Chromebook as it has a 1080 screen, same as the Lenovo but is much lighter and has longer battery life. Is it just the processor that needs a fan? How come phones with powerful processors don't need fans? Only my One Plus 3t gets slightly warm when playing some games.