Hmm, well, I've got a 1.25GHz single CPU lined up in exchange for some other stuff, so I'll still have the 1.25GHz DP card if it does turn out to be too slow. But as I said, my concern is much more for thermal issues and OS9 performance than OSX performance, so I don't expect it'll be an issue.

I'll take a look around at fan options, in any case - I wouldn'tve expected this would be something you could buy from a PC parts retailer, I'dve thought it would be some proprietary form factor or something