They are made to run at those resolutions so i see no way in which it can be harmful. The only way i see there being a problem is with heat, but if you have a stand and monitor temps to ensure they don't overheat you will be fine.
I am thinking of buying a Sony laptop in the future and are just curious as to weather or not Sony laptops come with the windows disk (version Dependant on the model obliviously). My Alienware i currently have did but i no not all do. Thanks.