Strategy games like Civ V will be more CPU-bound, games like Crysis 3,Metro (and pretty much all FPS/action games) are more GPU-bound. There are exceptions, obviously, like BF4, which is hard on both CPU and GPU for multiplayer.
It won't prevent the GPU from being fully utilized, so in GPU-bound games it will do just slightly worse than higher end processors. You won't run in to any noticeable bottlenecking until you get in to CPU-bound games, or multiplayer-heavy games.
It won't prevent the GPU from being fully utilized, so in GPU-bound games it will do just slightly worse than higher end processors. You won't run in to any noticeable bottlenecking until you get in to CPU-bound games, or multiplayer-heavy games.
Strategy games like Civ V will be more CPU-bound, games like Crysis 3,Metro (and pretty much all FPS/action games) are more GPU-bound. There are exceptions, obviously, like BF4, which is hard on both CPU and GPU for multiplayer.