I know FireGL cards are optimized for 3D modeling and such, but how would the latest FireGL V7350 compare to the x1900xtx in a game like oblivion or FEAR? And what's so different about the hardware that makes them charge $1000 more?
FireGL cards (like nVidia Quadros) are optimized for rendering quality, not speed. Their drivers are different than the stock Catalyst/Forceware and have special settings for apps like 3ds max or Maya. These differences (software and hardware) cause these "professional" cards to be slower in games. You can play games on them, but you'll get lower frame rates. If you're just gaming, it is NOT worth it to buy a FireGL or Quadro!