The graphics performance of Apple's iPad Air 2 is very powerful, and we always thought that it used the six core GX6650. According to the latest analysis of foreign media Anandtech, it seems that Apple has "left a hand".

Anandtech compared several generations of Apple's SoC. Compared with the A8, the A8X has many enhancements. The number of CPU cores has increased to three, the frequency has increased to 1.5GHz, and the GPU specification, Ram capacity, and memory bandwidth have doubled. In particular, the GPU uses the GXA6850 with eight cores, which is more powerful than the GX6650 previously widely believed. The naming method of GXA6850 has not been officially confirmed by Imagination.

According to Chipworks' disassembly analysis of A8, the schematic diagram of three core CPU+eight core GPU is "pieced together".

By comparing the specifications of the PowerVR Series6XT, we can see that the GXA6850 on the A8X has 8 clusters (usually referred to as "cores") and 256 ALUs (there are 192 Tegra K1 and GX6650, and the A8X has surpassed Tegra K1 in this specification).

The unofficial GXA6850 structure diagram shows that it has eight USCs, twice the size of the GX6450 on the iPhone 6.