On the morning of December 7, Qualcomm officially released the Snapdragon 845 mobile platform. According to Qualcomm, Snapdragon 845 is testing with partners, and the first consumer-grade commercial products will meet with you next year. This node is consistent with the current Xiaomi 7 rhythm that is confirmed to carry the Snapdragon 845.
It was the successor to the very successful Snapdragon 835 last year. The Snapdragon 845 took a big step in the SoC architecture because it was the first processor to adopt ARM's DynamiQ CPU cluster architecture. DynamIQ allows different CPU cores within the SoC to be hosted in the same cluster and cache hierarchy, rather than having separate discrete clusters with no shared cache between them, foreign media anandtech said, this may be by far The biggest change seen in modern smartphone ARM consumer SoCs.
Qualcomm Snapdragon 845 processor specific specifications (compared to Kirin 970 processor):
It can be seen that the Snapdragon 845 processor still uses the Samsung 10nm LPE process of the Snapdragon 835. The CPU uses 4 A75 magic modified cores and four A53 low frequency small cores. The GPU is upgraded to Adreno 630, and the baseband part is still strong. Invincible, the ISP part supports up to 25 million pixels of dual-camera and the current two-camera dual-camera module. The mobile phone equipped with this processor is listed in the first quarter of 2018.
It is worth mentioning that this time the Snapdragon 845 processor is the first upgrade of the Snapdragon 8 Series without changing the process, in order to achieve more aggressive performance improvement. As for why the Samsung 10nm LPP process is not used, mainly because the development cost of semiconductor chips is getting higher and higher, although they are all 10nm processes, the overall cost from LPE to LPP is no less than the upgrade of one process. Therefore, for Qualcomm, the use of more mature LPE can save a lot of money, and ensure the project schedule and price advantage, and the next generation of Snapdragon 855 processor, it may be directly on the 7nm process of TSMC.
éªé¾™ 845 processor parametersThe Snapdragon 845 is not only built on Samsung's second-generation 10nm LPP process, but also completely innovated. The new Kryo 385 is based on the Cortex A75. The three-launch, small-core Kryo 380 Silver is based on the A55.
With DynamiQ clustering technology, instead of ARM CCI interconnect, directly share 3MB L3 cache for information exchange (plus 3.5MB for each core cluster independent cache).
In the case of large cores, the frequency has increased by 14% to 2.8GHz from 2.45GHz, while the theoretical improvement of A73 (Kryo 280) to A75 is 22~34%. After two-phase superposition and high-pass tuning, the final realization is 25%~30. % performance growth.
On the small core, the A53 to A55 leap forward, although the frequency is more conservative, but the performance has a 15% increase.
On the GPU side, the Adreno 540 brought in 6xx, the 630 for the first time. Compared with the previous generation, the performance increased by 30% and the energy consumption ratio increased by 30%.
Memory support has not changed, ISP upgraded from Spectra 180 to Spectra 280, Qualcomm said, it is expected to take the photo of the Snapdragon 845 mobile phone into the 100+ score in DxO.
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