http://www.extremetech.com/computin...ised-cpu-new-quad-core-gpu-tsmcs-20nm-process Here is a good review on the new A8 that powers both the iPhone 6 and plus, surprisingly the gpu is not 6 cores but 4 cores. The A8 is very similar to the A7 with only modest improvements. Due to the IPhone 6 Plus resolution, the gpu does not perform as well as the gpu in the Iphone 6. All of the performance gains show up more in the Iphone 6 than the Plus. For gaming, Iphone 6 is the better device.