so am going to start my first build in the next week or so and have not picked out a GPU yet, i keep hearing good things about the 6850 and the 6870, but can not decide. Not very tech savy so am trying to learn. are these good cards for skyrim, BF3 GTA V on high and ultra settings? Or are there any other cards out there that am not aware of? want to spend around 125-175 for the GPU. Will all these parts work with each other? What would you Change? Here are the specs for the system i want to build, thanks for all the help!!