According to an API documentation in AMD’s Display Library, it’s found that AMD seems to be working on real GPU dynamic overclocking technology. This could adjust the GPU and maybe even memory clock speed, voltages depending on the load and temperatures. It would allow 3rd party applications to have a low-level interaction with AMD’s display drivers.
If this is true then AMD seems to be following the method viz. similar to what has (GPU Boost), although the algorithm will be instructing the driver to alter the clock speeds while taking load, power consumption and temperatures into account. The API documentation also reveals AMD working on dynamic boosting technology for memory clocks for which Nvidia doesn’t have anything like that for the moment.