So I'm getting a build together for a friend, and it is on a bit of a budget. Not a huge one, though. I recently realized that in FPS terms, the 2105 can hold it's own against a 2400. He probably won't care too much about the max settings, but at 1920x1080 and a few things like AAA or AA turned up, he wants good framerates. In games like Skyrim or Battlefield 3. So, how much is it gonna matter between the 2105 and the 2400? Is it worth the 50 extra bucks? (Or whatever it is? )