The 3440x1440 resolution of the 35" at massdrop is beyond what your current card can do at what I would consider decent graphics settings. I am also not a fan of the chg70 because it has blurry text. My concern with the ultra-wides is that I find them too short. Meaning their vertical height is not good enough. I suggest you go look at one of the 34-35" monitors in the store. There is no practical difference between 34/35 as an inch diagonal on such a big scale translates in to a very small % in height.
Also I know many have been happy with generics when it comes to screens, but I am fussy about image and text quality. Ultimately in order to get the text quality I wanted, I went with a Philips 32" It is only 60hz. I may upgrade...