Focus on DirectX 12 instead
It looks like the Mantle API developed by AMD is slowly reaching its end of its useful life.
Three cool games coming soon
Releases Catalyst 14.9.2 Beta drivers for Mantle support
Better performance and lower CPU overhead
AMD scores some big titles, including GTA V
Mantle Steam Machines anyone?
Johan Andersson talks Mantle in Battlefield 4
Select pre-screened members only
Cutting CPU overhead for would-be dictators
DirectX 12 will do in 18 months what Mantle does now