AMD Mantle update...

[Lanek]

I think the reason you are seeing such a speed boost variance is based on what limitation a CPU bottleneck is affecting performance. While you may get 10% where no bottleneck exists, when you compare a slower CPU (such as AMD's APU) vs the fastest (Intel top of the line) you are going to see a much bigger boost with the APU % wise vs that of the Intel EE. You will also see greater improvement in a game which uses loads of CPU calculations like AI, such as the Swarm demo, Starcraft, or other RTS type games.

I will said, it should depend more of the game, at least when we speak about overhead only. , but the video from oxyde comparing DX and Mantle with an I7 980x + 290x ... show the same increase. (( DX 8-13fps , mantle 40 to 60+ ( with peak at 85+fps )... http://www.engadget.com/2014/01/14/o...y-mantle-demo/

But starswam is an extreme case in term of CPU calculation anyway. 5000 independant AI objects who run at the same time... You take starcraftII, you take the worst case in term of numbers of objects and you multiply it by 10x ( 500 max objects to 5000 ). We are speaking a lot about RTS with the Oxyde engine, but personally i can see the impact on flight simulation like DCS A10C.. the impact on the cpu for it was crazy, because every AI ( objects, radar detection, missile, etc ) is calculated inreal time and simulated based on real "system " .