GPU for running auto cad , staad pro etc

[jayeshpratap]

My current specs
processor - Intel core2duo e7400
RAM-2GB
Integrated graphics

I want to run softwares like auto cad , staad pro , revit etc etc
What are the minimum upgrades that I should make in order to run those softwares effectively .I am a little tight on budget

Thanks

 

[C12Friedman]

One of the least expensive Autodesk certified cards I found, the PNY Quadro K420 for ~$115 would seem to be a good choice without overwhelming the CPU (too much)
Note: Newegg link used for descriptive value which IMO is better than what NVidia offers http://www.nvidia.com/object/quadro-desktop-gpus.html