This is some good news. and xboxiphoneps3 you have some crow to eat....
Xbox One reserves 10 per cent of graphics resources for Kinect and apps functionality, Digital Foundry can confirm, with Microsoft planning to open up this additional GPU power for game development in the future. This, and further graphics and performance-based information was revealed during our lengthy discussions with two of the architects behind the Xbox One silicon.
"Xbox One has a conservative 10 per cent time-sliced reservation on the GPU for system processing. This is used both for the GPGPU processing for Kinect and for the rendering of concurrent system content such as snap mode," Microsoft technical fellow Andrew Goossen told us.
"The current reservation provides strong isolation between the title and the system and simplifies game development - strong isolation means that the system workloads, which are variable, won't perturb the performance of the game rendering. In the future, we plan to open up more options to developers to access this GPU reservation time while maintaining full system functionality."
Once you get over the initial surprise that the background system takes up quite so much GPU time in the first place, the notion of being able to give developers access to this resource while not compromising functionality may sound rather like having your cake and eating it, but Microsoft points to particular aspects of the GPU hardware that make this scenario possible.
"In addition to asynchronous compute queues, the Xbox One hardware supports two concurrent render pipes," Goossen pointed out. "The two render pipes can allow the hardware to render title content at high priority while concurrently rendering system content at low priority. The GPU hardware scheduler is designed to maximise throughput and automatically fills 'holes' in the high-priority processing. This can allow the system rendering to make use of the ROPs for fill, for example, while the title is simultaneously doing synchronous compute operations on the compute units."
http://www.eurogamer.net/articles/digitalfoundry-microsoft-to-unlock-more-gpu-power-for-xbox-one-developers
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