Cooling my X800XL AGP

I'm having a bit of a dilemma. My X800XL AGP is running a bit too hot for my tastes, 72C under load. I just tested for artifacts for 10 minutes and there was none. Still, even with no artifacts, high temperatures can slowly destroy a video card. It doesn't show, but after a year or two the card suddenly refuses to run at anything more than half its original speed. That's what happened with my old 9600SE, I was overclocking the hell of it. (it was a very good overclocker BTW).

But I'm not overclocking this one, and underclocking doesn't help at all.

So, I could buy an aftermarket cooler, since I heard the stock one is crap. But that would cost me around 40$, including shipping. I paid 140$ for that card, so proportionnaly that's a big investement. Suddenly its like I would have paid 180$.

So, should I let it die slowly but surely, betting that by the time it dies I will buy a new computer altogether, or try to preserve it? Is 72C dangerous anyway?