Unless you have a 4K monitor or very high res monitor, A 1080ti is a silly purchase go for a 1080 , 1060 or 1070 they are cheap as ,because the intro of the ti and new titan ,it has pushed all the prices down a tier.I would even look at the rx 580 as well ,not saying you should buy one but at least check it out because that is really fast in DX11, As for monitors anything 4K won't get you change from 600 bucks USD AND UP and even decent 2K is 400 to 500,ASUS are good and this BenQ 32-Inch IPS 4K Ultra High Definition LED Monitor is 700 USD on Amazon and it tested consistently first ,in this price range and its massive 32inches of hardcore gaming