Which laptop is better, lenovo y470 or asus n43sn?(for rendering,3ds max,auto cad...)?

i read any issues with y470 such as :system gets too hot while gaming,limited screen resolution option,charging slowly & low contrast. & i dont know alot about n43sn .also y470 have 64 GB SSD hard but n43sn have not any & y470 is lighter(200 gr). plz say your reason .