Edsson :
Noob question. Can I have them both or they conflict with each other?
Direct3D is a component of the DirectX API suite which is designed to provide standardized access to the system's graphics hardware in a high-level fashion. Direct3D is architecture agnostic, it is the responsibility of the hardware manufacturer to create hardware and drivers that are compatible with the latest Direct3D API revision.
Mantle is a competitor to DirectX that is fine tuned for AMD's GCN architecture. Mantle is conceptually similar to Direct3D in many aspects, but provides a lower-level degree of control which in theory allows it to reduce software overhead and improve rendering efficiency.
Direct3D is installed alongside Windows, and the driver...