Well I bought the card (I figured I could just return it if it doesn't work out). I installed it and my 3DMark05 score went from an average of 2100 to an average of 4500. More than twice the difference! I'd say it's worth it.
But, when I actually started playing a game (COD2), I didn't actually notice much difference in performance compared to my old card. The only thing that caught my attention was when there was low detail to render (i.e. going through tunnels or under archways) in which it was as smooth as butter. Quite amazing.
EDIT: After using it for a bit, I realize that I am not getting my money's worth out of the card suring average gameplay. I am going to end up returning it after all. It's still an amazing card, just not worth the extra money to upgrade from my old one....
Edited by UV_Power, 21 March 2006 - 12:50 AM.