He's using something like a 8800GT 512MB.
I was thinking something along the lines of this: http://www.newegg.com/Product/Product.aspx?Item=N82E16814102890&cm_re=5850_2gb-_-14-102-890-_-Product
Since the Quadros are a bit too expensive.
i have a Asus hd 5850 1gig and i also do graphic modeling and unreal UDK Development Kit
for games and it does the job very well
Workstation Cards are too expensive for me LOL