I have a retail radeon 9000pro built by ATI which I've modded with a silent heatsink and it has run fine and still does, but it has a small problem playing certain formats of video. Its definately the culprit, but since its modded, I don't know if ATI will honor the warranty. The only thing I did was pry off the original HSF and attach a passive heatsink of the same size. I do plan to reattach the original HSF before sending it back so it will be just like stock, except I will use arctic silver epoxy to reattach it as I have nothing else in the form of epoxy. I was thinking maybe some other SPCR's have done this since replacing the stock heatsink should be pretty common around here
and I was looking for some feedback. Any experiences, comments, or suggestions?