It's black friday weekend atm and i'm looking at gfx cards to buy. I'm looking at the 770 and the 280x. Which is better? I have a 60hz monitor and it's 1080p. I was thinking of going with the 780 but it seems a bit overkill for 1080p. idk, what are your opinions on this? Also the 780 is still in the picture, just undecided. All three seem like good cards but im not sure which one is good for my situation. Also need a new psu for this. It needs to be 600w. I'm in canada as well if this helps, thanks in advance.