We haven’t head much on the DirectX 12 front, or the API front in general, for a while now. At this year’s SIGGRAPH however, Intel demoed DX 12 and showed impressive results. TDP Constraints are one of the biggest problems in Mobile Gaming, but with DirectX 12 the TDP of the device in question can actually drop by as much as 50% or you can opt for a performance increase of ~60%.
Intel Demo DX 11 TDP and FPS Baseline.
Intel DX 12 demo at SIGGRAPH shows a 60% boost in Performance Per Watt for Mobile Gaming Devices
DirectX 12 is, as I am sure you all know, a low level API. It works by reducing the CPU Overhead or the CPU Bottleneck effect by allowing the CPU to issue more drawcalls among other things. However, while this result is mostly performance increase in the Desktop sector, in the mobile side of things this is actually very useful. Since a Mobile Platform is always working with power and thermal constraints, both the CPU and GPU share a TDP Budget if you may, so any lack of power consumption by one can either be utilized in a zero sum or result in a decreased TDP rate. This is exactly how Intel has manged to show a 60% performance per watt boost in the mobile platform. This is pretty amazing news considering this is not a new architecture or a hardware change we are talking about but a new soft update. Observe the two pictures below while keeping the baseline above in mind: