I am stuck on which one to buy for my pc build. I was originally going with the HD 7870 but then I saw that there was a R9 270X for the same price. I read up on this and saw that the R9 270X has a slightly better bandwidth and I was also wondering how much of a difference this could or would make if any compared to the HD 7870. If there is any difference, is it worth getting instead of the HD 7870?