Today's mobile processors with the strongest graphics performance are Tegra K1 on the Shield Tablet and A8X on the iPad Air 2, of which the latter uses Imagination's PowerVR GX6650. The new generation of PowerVR Series7 has also been released shortly after it took the performance throne.
Specification comparison of PowerVR Series7XT, PowerVR Series7XE, PowerVR Series6XT, and PowerVR Series6XE. It can be seen that PowerVR Series7XT supports 2~16 clusters (which is often referred to as "core"). The floating point performance is single precision 256-2048Flops and double precision 128-1024Flops. Compared with PowerVR Series6XT, the specification is doubled. In terms of API, OpenGL ES version is still 3.1, DirectX is upgraded to 10.0, and even 11.1 is optional. OpenCL adds 1.2 FP to the original 1.2 EB (the figure above is from 。）。
From the overall structure, the architecture of PowerVR Series7XT is only a small change compared with PowerVR Series6XT.
The USC internal architecture of PowerVR Series7XT is also very similar to that of PowerVR Series6XT. Both are 4FLOPs FP32+8FLOPs FP16. Of course, the number of USCs of PowerVR Series7XT has increased to a maximum of 16. In addition, FP64 units of 2FLOPs per cycle have also been added.
The above is the performance comparison between PowerVR Series7XT and PowerVR 6XT. It is officially stated that the score can be increased by 60% under the same core number and frequency.
Imagination claims that the performance of the PowerVR GT7900 can surpass that of the NVIDIA desktop grade graphics card Geforce GT 730M.
Specification table of PowerVR Series7XT:
PowerVR GT7200: 2 shading clusters (dual core), 64 ALU core
PowerVR GT7400: 4 shading clusters (quad core), 128 ALU core
PowerVR GT7600: 6 shading clusters (Six cores) , 192 ALU core
PowerVR GT7800: 8 shading clusters, 256 ALU core
PowerVR GT7900: 16 shading clusters (16 cores), 512 ALU core
It can be seen that the mid tier PowerVR GT7600 already has the specification of PowerVR GX6650 on the iPad Air 2, so the next generation iPhone is likely to use the PowerVR GT7600, while the new iPad may use the PowerVR GT7800 or even the PowerVR GT7900, with unprecedented graphics performance.
