For those of you confused as to why you would spend so much money on a workstation card instead of a gaming card for professional applications, here are a few reasons:
1. Certified to work with your application. By that it means that you get accurate output, no driver related crashes, and solid repeatable performance.
I don't recall if this was mentioned in the article, but CAD software, more specifically, solid modelers, are nothing like games. Solid models for engineering use are exact. All extrusions, holes, rounds / fillets, are modeled and shown as such. Frame rates are not too important. In games, geometry need not be exact, as long as it looks good. Looking good will not create dimensioned drawings of real parts with tolerances, etc.
2. Autodesk AutoCAD is 2D software for drawing lines. You can argue otherwise, but that's all it really is. 3D functionality was added over time and is still terrible. It is legacy software that still has a purpose, but it is not designed for 3D solid modeling. Autodesk Inventor on the otherhand is. Inventor is very similar to Solidworks. Both are mainstream solid modelers. There are also high-end modelers like Unigraphics NX.
3. D3D is becoming more accepted in the CAD world. Inventor R11 can use either D3D or OpenGL. Inventor 2008 uses D3D exclusively. It is important to test both because not all cards work equally well in both environments and not all programs support both APIs. Previous generation ATI cards were very slow in OpenGL, but fine in D3D. nVidia cards perform equally well in both APIs.
4. Here's the major reason to get a workstation card. Working with multiple files open. A gaming card with choke if you open 5 or more part / assembly / drawing files at once. Workstation cards do not. When you design things, that is the typical environment.
5. In business time = money. Capital purchases are not so costly. I will spend a $1000 on a gfx card if it will save me even 30 mintues per day. Productivity is worth much much more that. I used to have a gaming card in my workstation when I first started at my job because nobody knew any better. I opened a few parts, and the machine essentially locked up. Losing work and then trying to recreate even simple things takes a lot more effort than a measly $1000-2000. I spent over $20,000 a few weeks ago for some mirror holders. Graphics cards, even in the price range above are cheap business purchases.
6. Again, workstation cards are not for gamers / home users. They were never inteded to be.