Hah! Watch your step here, you could actually get a better card for your application by getting a gaming card. Let me explain:
Let's look at GeForce cards, since those are fairly powerfull in OGL. Now, a 6600GT is a nice card, it cost around $150. You could probably get an identical Quadro card for around $800. And you'd think "Gee, a Quadro is a fairly good card".
But you could instead get a 6800GT, which would be far more powerful than a 6600GT, or even the Quadro based on the 6600GT. And the 6800GT would only cost you $300. In fact, there's probably a Quadro version of it, for around $1200!
EVGA has a 512MB 6800GT that supports dual-link DVI for huge, high-resolution digital flat panels. It also supports VGA of course. In fact, for professional applications that's probably what I'd choose.
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