I would actually tend to say that your problem is the graphics card itself. You stated the drivers are whats causing trouble not the CPU or the RAM. ATi is notorious for shitty drivers. Before you return it try an Nvidia card and see if the problems persist then check your results.
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I would actually tend to say that your problem is the graphics card itself. You stated the drivers are whats causing trouble not the CPU or the RAM. ATi is notorious for shitty drivers. Before you return it try an Nvidia card and see if the problems persist then check your results.