Is it safe to set larger resolution on macbook pro than available resolutions with 3rd party tools?

I am using macbook pro 13in. with native resolution of 1280x800. I'm not very happy with this resolution. I want some more objects... i mean bigger resolution with smaller icons and more room for stuff. I downloaded a software switchresx and now i'm able to set it more like 1440x900 or even more..

My question is... is it safe to use this bigger resolution? does it effect on VGA card? or any other hardware issue??

Thanks