Thanks for the input, Jason. It was obviously not was I was hoping to hear, but I appreciate your help. Obviously, there are a ton of variables that might effect how the card performs on a specific machine, but you implicating the drivers confirms things I have read elsewhere. However, you are the first person I have heard mention the FirePro line and its drivers specifically. If you wouldn't mind, I would greatly appreciate any more information you might share regarding your setup. Specifically, how long ago you experienced the problems with the FirePro, what model FirePro, what driver version(s) you were using (if you happen to remember that detail), and the obvious question of whether the change to the Quadro solved your problems. It is clear from our post that you stuck with the FirePro long enough to experience a driver update that made things worse. This is perhaps the most disturbing bit to read, as I was under the impression that the drivers while lagging behind Nvidia were steadily improving and had even pulled ahead when compared to the drivers for the newest 'fermi' Nvidia cards.
Thanks again for your help and insights. I hope to hear from others, but these workstation cards don't seem to have a large user base.
- Mike