according to a tear down by the Linley Group. The article which is posted on wccftech states that PowerVR has not released a successor to the GT7600 in the iPhone 6s--sound familiar (*cough*Skylake with Iris Pro*cough*)? It is surmised the 50% increase in synthetic GPU benchmarks derives from an increase in the GPU's frequency, but is unsustainable for any length of time. There are other interesting observations concerning the lower rated performance of the PowerVR GT7600 vs the Adreno 530 GPU in the Snapdragon 820 and a statement that the mobile industry is moving away from the PowerVR architecture. I'm not sure what to make of every claim in the article, but it seems like Apple is being deceptive with its performance claims if this article is true.