I just don't see how this is going to be better than the GX2 if it is only 2x3870's in CF... 2x8800GT's in SLi will outperform this.

Surely?

I mean all anyone can do is speculate but from what I have seen so far, it isn't that impressive (the X2).

As ever I will reserve my judgments until I see an X2 vs GX2 shootout.