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Maybe because 2011 requires cards with pixel shader 3.0 whereas previous versions of AutoCAD did not.
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Maybe because 2011 requires cards with pixel shader 3.0 whereas previous versions of AutoCAD did not.

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And 2011 requires cards with more than 128MB RAM 
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And 2011 requires cards with more than 128MB RAM

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All version he's listed required 128MB or greater for 3D modelling.
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All version he's listed required 128MB or greater for 3D modelling.

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Yes, but for 2011 it's 256MB or greater<br />
<a href="http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=6711774&linkID=9240618#section30" rel="ugc">http://usa.autodesk.com/ad<wbr />sk/servlet<wbr />/index?sit<wbr />eID=123112<wbr />&amp;id=671177<wbr />4&amp;linkID=9<wbr />240618#sec<wbr />tion30</a> <br />

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Yes, but for 2011 it's 256MB or greater
http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=6711774&linkID=9240618#section30 [http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=6711774&linkID=9240618#section30]


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Why was my card certified for AutoCAD 2007, AutoCAD 2008, AutoCAD 2009, AutoCAD 2010, but now fails or is not certified in AutoCAD 2011?
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Why was my card certified for AutoCAD 2007, AutoCAD 2008, AutoCAD 2009, AutoCAD 2010, but now fails or is not certified in AutoCAD 2011?

Why is my card not certified in AutoCAD 2011?

Game programming is the software development of video games. Game programming requires substantial skill in software engineering as well as specialization in simulation, computer graphics, artificial intelligence, physics, audio programming, and input. Like other software, game development programs are generated from source code to the actual program by a compiler. Source code can be developed with almost any text editor, but most professional game programmers use a full integrated development environment (IDE).

Game Programming

Computer-aided design (CAD) is the use of computer systems to aid in the creation, modification, analysis, or optimization of a design. CAD output is often in the form of electronic files for print, machining, or other manufacturing operations. CAD software for mechanical design uses either vector-based graphics to depict the objects of traditional drafting, or may also produce raster graphics showing the overall appearance of designed objects. As in the manual drafting of technical and engineering drawings, the output of CAD must convey information, such as materials, processes, dimensions, and tolerances, according to application-specific conventions.