My brother and I have been arguing about the two cards of late....his issue however was Vram. He argues that the GPU of the GTX 1080 is faster but that the 8 gigs of Vram is 'inadequate'. He says that the card will loose it's edge sooner than compared to a titan x which has 12 gigs of Vram.....he was playing rise of the tomb raider at max settings on a 1080p Samsung HD 3D TV and says the Vram usage was at around 7+gigs with 40-50fps on his titan x. So basically he's implying that a game requiring more than 8 gigs of Vram will run better on the titan x than on the 1080...I honestly at first thought that by then the GPU on the titan x won't be fast enough to take advantage of the massive Vram....but also consider rise of the tomb raider is already consuming 7+ gigs of Vram. I don't think Nvidia were dumb in putting only 8 gigs of vram on their latest high end card, but nothing makes sense now...so what do you guys think?