Breakaway runs on Amazon's latest open source engine Lumberyard and as far as we can tell at this point will need a mid to mid-high spec rig to play smoothly at 60 FPS. From what we've seen we think it'll run well on any Direct X 11 card with 2GB of VRAM and so we would recommend the GTX 750 Ti or Radeon HD 6870 as a starting point which likely will be helped by a quad-core processor. But this is early days and it's likely for these to change with the Alpha being released soon.