The new decacore processor MT6797 in the family Helio X20 of MediaTek now has an official existence and confirms the move upmarket by the designer of mobile processors in response to the SnapDragon from Qualcomm, market leader.
If it does not compete with the possibilities of the high-end of the American group, the new platform tries the configuration to 10 hearts divided into three clusters : 2 ARM Cortex-A72 cores up to 2.5 GHz, 4 ARM Cortex-A53 2 GHz cores and 4 ARM Cortex-A53 1.4 GHz cores.
As seen previously, the platform exploits RAM LPDDR3, which remains the majority proposition of mid-range and small high-end platforms and uses a GPU ARM Mali T8xx MP4 close to the T880. It also has a controller ARM Cortex-M4 for a set of audio processing functions (standard MP3 playback, management of voice quality improvements, etc.).
The transition to three clusters makes it possible to gain an additional performance zone, the smartphone operating for the most part from ARM Cortex-A53 cores while A72 cores are used only for very greedy applications.
In this way, MediaTek suggests that the compromise between performance and energy consumption is more balanced compared to the A53 / A57 bi-cluster solutions in big.LITTLE configuration or even A53 / A53e (as in Kirin processors at Huawei) .
MediaTek therefore ensures that its processor allows gain 30% autonomy with its processor compared to comparable bi-cluster solutions. The solution is particularly effective for loads that are too greedy to be managed by the small cluster but which only uses a fraction of the power of the large cluster, still obliging to "turn on" the big energy-consuming hearts of a processor to two groups of hearts.
The management of the three clusters requires a so-called architecture MCSI ((MediaTek Coherent System Interconnect). The AnandTech site suggests that it could be based on the ARM CCI-500 reference architecture unveiled at the start of the year and potentially capable of managing up to 4 clusters.
The MT6797 processor would thus be cut to compete head-on with the mid-range offer SnapDragon 620 (octocore 4 cores A53 / 4 cores A72 and latest generation Adreno GPU) to come from Qualcomm, rather than the high-end SnapDragon 80x proposals, while being able to tackle them at the margin.