Meizu MX4 Mediatek MT6595



The Meizu Mx4 is the first smartphone in the world to mount the SoC (System on a Chip), produced by the giant Taiwanese Mediatek, MT6595. In common usage, we usually refer to the SoC smartphone and tablet with the word processor, but in reality a SoC integrates into a single chip is the processor is the “controller” necessary for the operation of the device. Meizu proceeded to customize this SOC especially in the audio and the algorithm for the management of core.

The MT6595 is the second generation of octa-core SoC of MediaTek. The first generation (MT6592) used 8 cores based on the ARM Cortex A7 with 28-nanometer manufacturing process and frequency equal to 2 GHz. These cores were governed by a special algorithm that can automatically manage the operating frequency of the core in according to the work load and the temperature reached. The lack of applications that take advantage of the 8 cores simultaneously meant that the user, in most daily activities, did not feel an improvement in CPU speed sensing architecture Qualcomm Snapdragon 800 (and similar) as superior.

Mediatek MT6595 has therefore revised the SOC architecture big.LITTLE, with a quad core main (big) based on Cortex A17 from 2.2GHz (2.5 maximum) while the department idle and low power consumption are given to a less energy-intensive Cortex A7 clocked at 1.7GHz (little).

Compared all’MX3, Meizu states of MX4, a doubling of performance with an energy consumption decreased by 30%. The GPU is more or less in line with the proposals of high-end Nvidia and Qualcomm and is based on PowerVR G6200 chipset with 600MHz frequency. This solution is capable of handling screens with resolution WQXGA 2560 × 1600 pixels.

Meizu durations presentation showed the score achieved in the test Antutu from his new top of the range, but did not say which version of Antutu has been made. If it was version 5 then we would be faced with a terminal performance really.

The customization Meizu has taken place in the audio because he worked for the SoC to combine with the Mediatek chip NXP Smart PA of the second generation. The previous generation of the chip is the one that has allowed HTC One (m7) to bring the effect of “boom” sound of a smartphone.

We are curious to try the optimization of core-piloit on Meizu MX4 well aware that the mobile software can be written in multithreaded or singlethread. In the latter case (single thread) it will use a maximum of 100% of a core because if the software opens a new thread this will be “processed” by another core, and so on. To be able to actually feel the “power” of the new algorithm Mediatek the software must have a minimum of 8 active threads. In summary, then, if a software is not written with several calls a new thread to have 8 cores (or even thousands!) Does not change anything, only one core will always work because you can not “break” a thread on two cores separated.




September 2, 2014

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