£260 for a new GPU :O my computer barely cost £60 jeezzzzzzzzzzzzzz. Can't you just get a cheap one and then save up yourself like most people have 2?
My computer can barely run arma but I still cope with shit graphics etc, there are certain things in life which you should put first. In my opinion spending £260 on a GPU isn't it unless you have it as spare money for it.
I have played on a £60 computer even since I joined this community. You don't need to spend £260 on a GPU if you do not have the money for it.