Im at a probable impasse, in the foreseeable future i need to upgrade my computer for the next gen of games like fallout 4 and battlefront. I don't know as to whether or not get the R9 280x or R9 270x from the XFX Double dissipation series. I'm looking to save money and the specs look quite similar with an exchange between clock speeds on both sides (memory and core), so i cant determine which is more worth to get with the rebates going on at the moment. (30 dollar price differences)