Its primarily in the rendering, so you should still get pretty good responses even though it is a workstation graphics card. I believe Alibre is more processor and memory hungry than video card hungry. But keep in mind before you throw a massive multiprocessor chip at it, it will only use 1 of those cores as its single threaded, so clock speed would be more important than the number of cores.
But, I'm not a power user when it comes to alibre, I'm very much on the hobbyist level with my most complicated design only having, maybe 100 parts in it, most are well below 50 parts normally, for me.