Funny thing about these VGAs. I still have that same video card, from Gainward, I believe, also in the storage area. The fan still works -- same fan (correction, much later -- it's passive, after all). If it was particularly hot, I don't recall that condition now. But there are various aftermarket heat sinks for MB chipsets that have a sizable passive radiator on them, and a very similar mounting pin dimension. One of those ought to work just fine !
Just as a comparison, I also had a PNY branded Ti-200 card that ate its fan in a few months, and at least one more after that, before I got a Thermaltake "Crystal Orb", I think, which did last as long as I wanted to use the card.