So basically it would not be worth it? Although I have seen some people that have 2 6770's crossfired with no micro-stuttering problems. How much performance wise would I gain/loss with the two being crossfired? I have seen about 10% fps being dropped from a x4 PCI slot but just the crossfire is what I am still unsure of.
Well, I wouldn't be able to say specifically about what FPS drops may occur or how much performance would drop. In my opinion, no it would not be worth it. That's why I suggest looking at a HD 6950/GTX 560ti upgrade as you won't have to worry about how much performance drop you may experience. One powerful card is almost always a better solution to two slower cards.