AMD Catalyst 14.1 Beta drivers enable Mantle multiple GPUs 58% faster
If you have the above you will see a new ?Graphics API? option in the in-game Graphics Options settings after starting the game, here you can switch between using DirectX 11 and Mantle (remember to restart the game after changing).

If the ?Graphics API? option is missing, that means you do not have a compatible GPU and driver and the game will use the standard DirectX 11 graphics API instead.
How to enable Mantle
In order to use Mantle you will need the following:
-AMD Catalyst 14.1 Beta drivers. AMD will post them here.
-AMD Radeon GPU with Graphics Core Next (Note: AMD Catalyst? 14.1 initially supports the AMD Radeon? R9 290X, R9 290, R7 260X and ?Kaveri? APU (learn more))
-64-bit Windows (7, 8 or 8.1)
Here is a summary of the test cases:
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58% faster

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If you have the above you will see a new ?Graphics API? option in the in-game Graphics Options settings after starting the game, here you can switch between using DirectX 11 and Mantle (remember to restart the game after changing).

If the ?Graphics API? option is missing, that means you do not have a compatible GPU and driver and the game will use the standard DirectX 11 graphics API instead.
How to enable Mantle
In order to use Mantle you will need the following:
-AMD Catalyst 14.1 Beta drivers. AMD will post them here.
-AMD Radeon GPU with Graphics Core Next (Note: AMD Catalyst? 14.1 initially supports the AMD Radeon? R9 290X, R9 290, R7 260X and ?Kaveri? APU (learn more))
-64-bit Windows (7, 8 or 8.1)
Here is a summary of the test cases:
| Test case | 1: Low-end single-player | 2: 64-player multi-player | 3: Multi-GPU single-player |
| CPU | AMD A10-7850K (?Kaveri? APU), 4 cores @ 3.7 GHz | AMD FX-8350, 8 cores @ 4 GHz | Intel Core i7-3970x Extreme, 12 logical cores @ 3.5 GHz |
| GPU | N/A | AMD Radeon 7970 3 GB | 2x AMD Radeon R9 290x 4 GB |
| Settings | 720p Medium | Ultra 1080p | Ultra 1080p 4x MSAA |
| OS | Windows 7 64-bit | Windows 8 64-bit | Windows 8 64-bit |
| Level | Singapore | Siege of Shanghai | South China Sea |
| DX11 avg | 26.6 ms/f (37.6 fps) | 18.87 ms/f (52.9 fps) | 13.24 ms/f (78.4 fps) |
| Mantle avg | 23.3 ms/f (43 fps) | 15.08 ms/f (66.3 fps) | 8.38 ms/f (121.5 fps) |
| Improvement | 14% faster | 25.1% faster | 58% faster |
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58% faster


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