Ocaholic posted GeForce GTX 780 vs. Radeon R9 280X CrossFire
A quote from the article:
Comparisons of two mid-range (roughly) graphics cards with one high-end VGA are almost always good for some really interesting results. Today we're having a look at what two AMD Radeon R9 280X graphics cards can do against one NVIDIA GTX 780. The two R9 280X cards are quite a bit cheaper and we're really curious to find out which setup is going to be quicker.GeForce GTX 780 vs. Radeon R9 280X CrossFire @ ocaholic