Yes, LuxXeon, your info is beginning to clear things up for me. After all, I'm likely not going to encounter situations where I'm rendering very high poly counts, etc.. My average still picture file in Poser is like, 3MB at 300dpi. Plus, I'm out of the loop completely on animating.
Vue, is a different story, one can get high counts even with their lower end programs, if you populate a scene with forests, and complex cloud forms, etc.. So basically, I'm trying to just get a bit more speed for whatever I'm trying to render.

So do you think I'd gain any speed by upgrading the video card--speed of renders--even to a card in the price range I'm into? (Despite whether or not I understand the specs.)
And secondly, how do I find out which I already have; CUDA or Open CL? I think I already queried Dell--the manufacturer--a number of years ago, and got a vague answer on that. That is because I bought a copy of Pret-a-3D's Reality renderer some years ago, and they had a choice of files between Open CL, and probably CUDA, can't recall. I just wanted to know the correct download file version of their plug-in to use. (Though it didn't work well in either version and I couldn't easily find the info of theirs--Reality--that specified the version of Poser it uses; which I didn't have.)

Thanks once more!