Indeed, and what the enthusiasts should be telling you (assuming first of all that you're willing to take it apart) that the thermal pads used on laptop coolers are pretty crap, and merely replacing those with some good thermal goo should give you enough of an advantage to try an oc.
This is ofc assuming you're willing to open the thing up - but do bare in mind that it can be that much more daunting than opening up your pc.
You can lube the fans, you can adjust the voltage on them also.
Ok, so you oc it and gain some small %, once you run some benchies, you'll notice you're No.1 in the hwbot listings. (you can actually keep the case open and direct external fans onto it to do that)
At the end of the day, you have a decent 4500 mobile gpu and you could add some small % to it - in all honesty, you won't notice in general use. Except for your battery life.