Out of those two graphic cards which one should I get or is that $40-80 bucks more for the 660ti worth it or should I downgrade to the 660 to save some money in my rig???. Please explain your answer if you can, Thank you.
Well 660. Because I dont think AutoCAD supports AMD. Go 660 man. Just go. HeH
Autocad is a gpu accelerated program(I would believe). It can be accelerated with any gpu. If it works for AMD firepro)designed for workstations), it will definately work for other amd cards(as they didnt remove computation power, its just less focused in it. A simple google search would correct the statement. more or less, i like how Brutuz of overclocknet puts the cards well into description:
For now, yeah, but GPGPU is only getting more and more popular, especially since Adobe's taking full advantage of it.
I'd say Tahiti is pretty refined, AMD has the one GPU that is a great chip for desktops, GPGPU supercomputers/servers and CAD whereas GK104 is great for desktops and CAD but not so good for GPGPU.