AMD’s Mantle API is currently being integrated in Frostbite 3 based Battlefield 4 which is without a doubt the most biggest title coming out this year after GTA V. Such is its fame that AMD even bundled their latest and top new Radeon R9 290X graphic card with the new title and those of you lucky enough to pre-order the GPU now would be able to redeem the game at no additional cost. So back to the API talk, currently developers have to operate through DirectX and OpenGL APIs to make games work but this doesn’t fully unleash the hardware capabilities of a PC nor do they allow ease of development to developers.
The AMD Mantle API is being exclusively developed for GCN enabled Radeon graphic cards. This would allow developers to dig deep into the metal to bring console-level optimizations through ease of programming and faster optimizations over a coherent GCN chip architecture. This means that we would see better performance on the entire GCN architecture enabled AMD graphic card lineup ranging from the top Radeon R9 290X to the bottom R7 250X.

http://wccftech.com/battlefield-4-frostbite-3-support-amd-mantle-nvidia-nvapi-apis-pc-optimizations/But Frostbite 3 is more than that as John Anderson, the lead guy behind the team at DICE in developing AMD’s Mantle API said on his twitter profile that Battlefield 4 would also feature NVIDIA’s NVAPI support as it did in Battlefield 3. While the optimizations many not be as great with NVIDIA’s API as with AMD’s Mantle, its still worth noting that atleast DICE is supporting both the Red and Green team graphic cards which means PC optimizations at both ends. In addition to this, you will have the option to select between using Mantle and DirectX 11 if you are using a GCN enabled GPU. Frostbite 3 is on the road to become one of the new mammoth tech engines in the gaming industry powering a portfolio of 15 AAA titles which include the upcoming:
Battlefield 4
Command and Conquer
Mirrors Edge
Plants Vs Zombies: Garden Warfare
Need For Speed: Rivals
Dragon Age: Inquisition
Star Wars: Battlefront
Mass Effect (New Title in the Franchise