In my case I have two graphics cards, and the bottom one blocks the airflow for the top one, which had been sitting around 65C on idle before I bought this.  I figured I could just stick this underneath the top graphics card so some of its hot air could blow out the back of the case.

I put it in the next PCI "slot" down, and it was somewhat of a tight fit but nothing too worrisome.  Upon plugging it in and firing it up, I kept an eye on my graphics card temperature as I used it and ran a few tests.  There was about a 10C difference.  Not a ton, but enough that I would have considered it worth the price of the product.

Then, about 3 months after I installed this fan, I came home to a deafening noise.  At first I dreaded it was a hard drive, but I quickly realized it was a fan.  I popped my case open, and lo and behold, it was this fan.  It decided to start dying a very noisy death.  That was it, I haven't gotten any more life out of it despite numerous attempts.

I don't think this was worth the purchase.  It helped a little, for a short period of time but quickly died, in an obnoxious fashion.
In my case I have two graphics cards, and the bottom one blocks the airflow for the top one, which had been sitting around 65C on idle before I bought this. I figured I could just stick this underneath the top graphics card so some of its hot air could blow out the back of the case. I put it in the next PCI "slot" down, and it was somewhat of a tight fit but nothing too worrisome. Upon plugging it in and firing it up, I kept an eye on my graphics card temperature as I used it and ran a few tests. There was about a 10C difference. Not a ton, but enough that I would have considered it worth the price of the product. Then, about 3 months after I installed this fan, I came home to a deafening noise. At first I dreaded it was a hard drive, but I quickly realized it was a fan. I popped my case open, and lo and behold, it was this fan. It decided to start dying a very noisy death. That was it, I haven't gotten any more life out of it despite numerous attempts. I don't think this was worth the purchase. It helped a little, for a short period of time but quickly died, in an obnoxious fashion.