There’s nothing wrong with using a gaming card for 3D software, a workstation card has just a few advantages over a gaming card. First, you can get a workstation GPU with more memory, which is good for GPU rendering where often times you have to fit everything in memory for it to be able to use the GPU. The biggest advantage of workstation cards is how they can handle many objects. If you’re doing extremely complext scenes or CAD designs then that is helpful. Also, workstation GPU’s are usually more reliable, meaning they aren’t likely to fail as easily so if you use them intensely then they’ll hold up more.