Yep, I did it. I added another video card to my gaming machine! It’s the exact same model (though it does look slightly different). Got it on Ebay for about half what the first one cost. I hooked them together with the little crossover cable.
Wow! What a difference! These two cheap cards rock! Now Fallout 3 never skips a beat. It never chunks, never stutters, never pauses at all, not even in the middle of a fire fight with stuff flying all around and lighting effects and so on. I’m impressed, and I’m not even state-of-the-art here. I’m living way back from the bleeding edge (I dislike bleeding–out my wallet).
So, if your system can handle it, I would recommend it. I paid a little more for my motherboard so that I could get the x16 speed with both video cards, and I’m very happy with it.