Oh, I've got loads of old cards! I keep them as part of my "NVIDIA collection". Sad but true and is part of this quantum enthusiast's PC hobby.
I actually got the thing used for the princely sum of £58.74 off an online store back in 2008 as it had such a good reputation (the gamechanger thingy) and I wanted to play around with one. I had a HD 4870 then which outperformed it on paper, being a later generation. However, in games the gameplay generally felt smoother on the NVIDIA card, despite this framerate disadvantage and didn't show as many of the hitches and other little niggles that the AMD card did, much less in fact.
Soon the 4870 ended up on eBay and I got a GTX 285 which was current at the time and haven't looked back.
I ended up getting two 8800 Ultras after that as I noticed them for sale. One was used and had a GTX cooler on it and the other was a brand new sealed box BFG one with the fancy offset cooler that I got off eBay. There was even a BFG t-shirt in the box!
I still have them all, they all work, plus I've got a thing for collecting dual GPU cards when they become affordable. That means I've got a 7950 GX2, GTX 295 and currently
three GTX 590s. I'll most likely eBay one of the 590s as I've just bought two of them. I did have a 9800 GX2 three times, but couldn't resist selling each one on eBay for a profit.
If I can find a cheap one of those now, I'd buy that too.