AMD's vision of unifying CPU and GPU takes a step closer with the integration of HSA features in the latest line of APUs. Till now, the term 'APU' (Accelerated Processing Unit) has often been considered to be a buzzword, or euphemism for (competent GPU on die) that is often considered to be 'OK' for entry level gaming, but with hUMA (Heterogeneous Unified Memory Access), allowing both GPU and CPU to access the same system memory, for the first time in history, developers have instant access to the processing power of the GPU cores on a hardware level. Using the now mature 28nm fabrication we are likely to see an improvement in performance per watt as well as various improvements in regards to the GPU. The R7 GPU is using AMDs GCN architecture that has 8 compute cores and a total of 512 shader cores.