If you do have a spare slot under your video card, it will pull most of the video card's heat straight out the back. People have decided they don't put out nearly the amount of air advertised, but I think it's still worth a few bucks if you have the room and don't have a side blowhole or Card Cooler already. BTW, you may want to peel off the square label on the bottom and oil the bearing with some TriFlow oil, then replace the label and use shipping tape to make sure it stays on.