Those creating games for the Xbox One now have partial access to an additional CPU core, according to materials apparently stolen from Microsoft.

According to Eurogamer, the information comes via hacking group H4LT, which leaked the November 2014 Xbox One development tools, firmware, and documentation during the Christmas break.

The Xbox One has eight CPU cores in total, but two are reserved so the operating system can run alongside games on the system. However, the leak shows that since October, developers have been able to access 50 to 80 percent of the seventh processing core in exchange for reduced Kinect functionality.

Specifically, developers using the extra core cannot use custom voice commands, and the Kinect's infra-red and depth functionality is also disabled.

However, there is currently a limitation: any voice command at all sees the useage of the seventh CPU spike, so scheduling tasks for it to complete is slightly problematic. With that in mind, it would seem that disabling voice commands completely (including those used to record gameplay) would be a decent solution.

In June of last year, an update to the Xbox One's development kit gave game designers not using Kinect access to additional GPU resources in the console.