Autocad (nor any of those software actually) has gpu acceleration that requires a workstation card. Autocad actually has none. The viewports aren't really counted but they are dx and work better with more performance so gaming cards win. But pro software can't all just be grouped together even from the same company like with AE is cuda only but not many people need raytracing so it doesn't even matter. You want to put much more in cpu there vs pre. All software must be considered on its own. They are not created equally.
http://www.tomshardware.com/charts/workstation-graphics-2013/benchmarks,146.html Tom's hasn't updated the charts in awhile but just some examples.
IT guys are going to suggest xeon/opteron/ecc/workstation card. It's just the professional thing to do for your type of work. I haven't really suggested anything specific but if this is a work pc and nothing more, then I would probably go with him. I've had workstations with consumer hardware as well and had no issues. It depends on usage and if you really want to stretch that budget for the best performance. It's just the premium you pay that steer some away from workstation hardware vs the benefits of it.
The k2200 is based on the gm107 which is loosely the 750ti. I won't delve into driver/hardware differences with ws vs consumer. Although the software isn't very gpu intensive, it still uses the gpu and all those pixels will eat vram. Lower end cards will work as is the case with workstation cards performance but it will have more vram that low end consumer cards won't have.
What specs do you work on now? Or pcs you've worked on before? How was the performance? Cpu/ram/gpu/vram/storage usage would be the best thing but most don't pay attention to it. That's really the questions why I haven't suggested anything specific because just saying software is just general info, not really an idea of the workload that is specific to you. Who knows, you may not need much performance so maxing the budget with extra room for the future maybe unnecessary. I don't like to assume anything.