I think the card is fine I just think for 1440p I need another one. I think I have got used to the smoothness 670 Sli gives.
Why not stick with the 670's then? you stated you were happy with them and then you go and buy a 780 which you knew would not be as fast. So from being content with 670 SLI to needing do blow another £550 on a 780..
