If your GTX580 is playing fine Roughneck, then maybe just wait.
Spoffle, you're coming across as a little hostile in your comments. I don't know if you are, but it seems that way. The OP has asked for some advice and that doesn't need to include jabs about driver inf files, the manufacturer or anything else that isn't relevant. If you've got a suggestion regarding an Nvidia card that the OP can upgrade to then please contribute and let this thread be one of the reasons people like to come on the forums rather than a reason to avoid.
There isn't anything to upgrade to from a GTX580 that's worthwhile at all. Well all know this really, others already had that bit covered.
It's not hostility either, I'm blunt and I
might be intolerant of irrational preferences. That's what my whole "inf files" was about, because people who say "I prefer company x's drivers" tend to not actually know what they're talking about.
I wasn't questioning the OP's preference with the intent to go on about an AMD card to get, because that's not even relevant, I tend to question anyone who says they have a preference with no informed opinion to back it up, it just so happens that currently the people who say "I prefer x so only recommend them" tend to be people talking about nVidia.
It's becoming very apparent that some people can't handle bluntness and need posts to be dressed up with sugar, cotton wool, and doughnut cushions, but really people shouldn't be afraid or discouraged from being honest about what they think, and I don't see how it's an issue for me to be honest about what I think about people having irrational preferences.
Let's not forget how written communication often loses tone and intention too, which is made worse by some one pre-empting a tone of a post subconsciously and applying it universally to say, all of my posts.
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