Allwinner A80T: CPU Performance/Power and GPU tuning of the SoC, the 5 initial PCBA designs (4 by Allwinner itself)

See first: 9.7” Onda V989 Tablet with Allwinner A80T UltraOcta shipped today for $219.90 only [USD 99 Allwinner, July 18, 2014]

Octa-Core CPU Performance/Power Tuning on the Allwinner A80T [ARMdevices.net YouTube channel, July 18, 2014]

This video shows one of the GPU tuning tools (PVRTune) used during A80 development. To run the tests, an A80T tablet is hooked up to a host computer running PVRTune. A tester can then operate different use cases on the tablet (scrolling through the GUI, playing games, etc) while seeing how GPU load is affected on the host computer’s PVRTune display window. In this video, we see how the GPU’s 3D engine is loaded while scrolling through Android’s stock GUI. When performance bottlenecks are spotted, this tool can help engineers better distinguish CPU/GPU root causes, increasing debugging efficiency.

PowerVR G6230 64-Core GPU Tuning on the Allwinner A80T [ARMdevices.net YouTube channel, July 18, 2014]

This video shows one of the GPU tuning tools (PVRTune) used during A80 development. To run the tests, an A80T tablet is hooked up to a host computer running PVRTune. A tester can then operate different use cases on the tablet (scrolling through the GUI, playing games, etc) while seeing how GPU load is affected on the host computer’s PVRTune display window. In this video, we see how the GPU’s 3D engine is loaded while scrolling through Android’s stock GUI. When performance bottlenecks are spotted, this tool can help engineers better distinguish CPU/GPU root causes, increasing debugging efficiency.

Allwinner A80T’s Solution Development Cycle [ARMdevices.net YouTube channel, July 18, 2014]

This video shows the progression of 5 PCBA designs throughout Allwinner A80T’s solution development cycle:
1) Initial dev board: a fully-expandable performance evaluation board used for early-stage driver development and IC performance optimization.
2) A80 OptimusBoard: a small-size development board used for non-tablet application SDK development.
3) Tablet form factor reference board: a development platform used primarily for Android porting optimization, early-stage reliability testing, and solution reference design.
4) Customer tablet boards: a mass-production tablet designed by customer based on Allwinner reference design.
5) CubieBoard 8: a development board designed by customer based on Allwinner reference design.

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