On December 3, Beijing time, Huawei released its latest mobile phone processor, Kirin 620. Its biggest highlight is that it uses an 8-core 64 bit architecture and provides very perfect network support to locate the middle and low end. Although it has not logged on to the mobile phone for the time being, it does not prevent us from combining the existing information to carry out some preliminary analysis on it.
First, let's review the specifications of Kirin 620:
8-core Cortex-A53 design, maximum dominant frequency 1.2GHz;
Mali-450MP4 GPU；
Support LPDDR3 memory;
28nm process;
Support GSM/TD-SCDMA/WCDMA/TD-LTE/FDD-LTE, where the maximum downlink speed of LTE is 150Mbps;
It supports up to 13 million pixel camera and 1080p video recording.
In terms of CPU, the design of eight core Cortex-A53 is not the first time to appear on mobile phones. Qualcomm Snapdragon 615 and MediaTek MT6752, which were released earlier than Kirin 620, are pioneers of eight core Cortex-A53. However, four of the eight cores of Qualcomm Snapdragon 615 can work at 1.5GHz, and the maximum main frequency of the other four is 1.0GHz, which can open all eight cores, As for the eight cores of the MT6752, they all have a maximum dominant frequency of 1.7GHz. Both processes are 28nm, but the Snapdragon 615 is 28nm lp, and the MT6752 is 28nm hpm. Therefore, in terms of performance, the latter is superior.
Coincidentally, Snapdragon 615 The two processors HTC D820 and MT6752 are placed on two derivative versions of the same machine by the same manufacturer - HTC D820 and D820s. The latter is MT6752 version. We have evaluated the D820 using Snapdragon 615 earlier, and found that the D820 of Snapdragon 615 processor will have obvious heating phenomenon when the CPU needs continuous operation, Kirin 620 with the same architecture and similar dominant frequency should also have similar fever.
In terms of CPU performance, we use GeekBench 3 to score based on Snapdragon 600, The score of Snapdragon 615 with eight cores fully open is about 2200 points, which is slightly higher than that of the Snapdragon 600 processor on HTC Butterfly S with 1950 points. Although the score of single core is higher than that of Snapdragon 600, the performance of 615 with eight cores fully open still exceeds 600 points. It looks good, and it's quite powerful.
However, in terms of GPU, Kirin 620 uses ARM's Mali-450MP4. Although the GPU has a 700MHz operating frequency and a four core design, it does not support Android's OpenGL ES3.0. This GPU has also appeared on MediaTek's MT6592, so it should be feasible to use MT6592's GPU performance to explore Kirin 620's GPU performance, Here we use vivo X5 as the reference standard of MT6592.
If Snapdragon 615, Kirin 620 and MT6752 are compared together (the black data in the figure above is the measured data, and the red data is the data in the running score software database, Mali-450MP4 The score measured by vivo X5 is used as a reference). If the score of MT6752 can really reach the level of the data in the figure, then it is undoubtedly the most powerful among the three, and among the screenshots published on the Internet before, the score of HTC D820s using the MT6752 processor reached more than 42000, Even at the same level as Snapdragon 801 on many high-end mobile phones.
So after the little monster 6752 was put aside, only Kirin 620 and Snapdragon 615 are left in the middle and low end 8-core 64 bit chips. In terms of CPU performance, Kirin 620 has yet to be tested. However, the core allocation ability of Huawei's processors has always been average, which will have a significant impact on the performance, possibly similar to Snapdragon 615.
In terms of GPU, the performance of Mali-450MP4 is obviously inferior to that of Adreno 405 on Snapdragon 615. It lags behind in most tests. When evaluating HTC D820 and vivo X5 between them, it is also obvious that vivo X5 is more difficult to cope with large games, while D820 is relatively smooth (The above GPU test results are all in 1080p off screen, and the resolution factor has been excluded) 。
Of course, the performance of a mobile phone's SoC is not all. Especially for this low-end SoC, signal quality and power saving are very important considerations. Huawei and Qualcomm have made great achievements in the field of mobile communication. Compared with the performance that is very ordinary, the Kirin 620 does a good job in network support, GSM/TD-SCDMA/WCDMA/TD-LTE/LTE FDD support is good, and dual card, dual band and dual 4G are also supported, but these are not advantages in front of Snapdragon 615. The HTC D820 currently sold in China also has dual card, dual standby and dual 4G capabilities, and the network support is also comprehensive. Similarly, if you buy baseband and send chips, Kirin may have the advantage of producing and selling its own products.
