Results: Far Cry 3
Far Cry 3 looks like it gets more from the $800 machine's beta Catalyst driver package through our first three test settings, where it beats my $1,000 PC. Beyond that, the highest-end config bests Don's setup. Both overclocked machines reach the limit of playability at 1920x1080 with Ultra quality settings, though.
Paul's $600 PC gives you the choice of either dropping below our Ultra quality preset or reverting back to 1280x1024.