[citation][nom]danwat1234[/nom]"With a single intake vent, G51J users should pay special attention to leg position when using the unit as a laptop." WRONG!!!That circular 'vent' does not go through. It is not used for cooling, it is only aesthetic. The intake vents are those slits around the RAM , the 2 hard drives bays and around the video card. Thus leg position is NOT important. The cooling system is very good.[/citation]
I will back up this post as well. I have an Asus laptop with the same cooler design. If you actually take it apart, you're realize that the giant circular 'intake' at the bottom doesn't actually go through anything. I'll admit, it's a little misleading when your laptop has a giant circular grill looking thing at the bottom lined with mesh and it ends up pretty much doing nothing.