Discrete GPU Performance (Overclocked CPU)

At the high resolution of 2,560 x 1,440, Battlefield 4 is very much GPU-limited, even when using an R9 290X on medium settings. Nevertheless, Mantle is able to boost performance by 6 or 7 percent. This isn't a drastic amount, and at these framerates the differences are hardly perceptible, but free performance is free performance.



Dropping to 1080p, the story is the same for the R9 290X, as it sees 6-7 percent boosts at both the ultra and medium presets, although again it won't deliver an experience that's noticeably smoother than Direct3D. The R9 280X, which remember uses the older generation of GCN hardware and is thus not very optimised currently, actually experiences a slight performance decrease. The R7 260X, meanwhile, doesn't change at all in the heavily GPU-limited ultra scenario, but gets a minor (4 percent) boost using medium.