I bought this because my laptop was getting fairly hot when using it for anything but typing, emails etc. Now I can have it running for the whole day and it feels cool to the touch. I had recommended a cooler to my son quite some time ago as he plays a lot of high intensity games and his laptop gets extremely hot. He brushed me off. Now that he has tried this cooler he has been amazed at the difference it makes. His 17" notebook is considerably cooler than before, in fact it is just warm instead of hot. You can comfortable touch it which you could not do before. It took about 1 hour before he noticed the difference as the notebook was so hot, after that the temperature steadily went down to a warm.. It never got as cold as mine, but then I do not play high intensity games.He has now requested one of his own which I have ordered. I would highly recommend this cooler. I have had it for about 1 week and I would not like to be without it. It is very light and easy to use.