On August 8, Qualcomm launched the Snapdragon 670 SoC in a low profile. From the perspective of parameter configuration, this SoC seems to be another "toothpaste squeezing" product. Like the Snapdragon 710, it uses the 10nm LPP process. Its overall performance is between 660 and 710. The CPU architecture is consistent with the Snapdragon 710, but the dominant frequency of the core is lower, GPU is also a little lower than Adreno 616 of Snapdragon 710.
OPPO R17 is the only mobile phone on the market that is equipped with Snapdragon 670 and is on sale, and it is also the protagonist of this Snapdragon 670 performance test.
Parameter configuration
Chart source Anandtech
In terms of parameter configuration, the overall architecture of the Snapdragon 670 is the same as that of the Snapdragon 710. Both are six small cores Kryo 360+two large cores Kryo 360. The small core Kryo 360 is a revision based on A55, while the large core Kryo 360 is a revision based on A75, and both are 10nm LPP processes. The biggest difference between the two in CPU is the dominant frequency of the large core. In contrast, Snapdragon 660 is not a product of the same generation. It is not only a 14 nm LPP process, but also its 4+4 Kryo 260 architecture is far from 670 and 710 in terms of performance.
In terms of GPU, the three are Adreno 512, 615 and 616. Based on the naming rule of Adreno, the first digit represents a series. The larger the second and third digits, the stronger the performance. The theoretical ranking is also 616>615>512.
Other aspects:
All three support dual channel 1866MHz LPDDR4 memory, and the maximum memory bandwidth is 14.9GB/s;
The DSP chip of 710 and 670 is the same as that of Snapdragon 845, both of which are Hexagon 685, while that of 660 is the same as that of Snapdragon 820.
In baseband, 660 and 670 are X12 LTE, while 710 is X15 LTE.
Running points
CPU score
In terms of performance score, the overall performance of the Snapdragon 670 is very close to the theoretical performance, but it may be due to the difference between the dominant frequency and the regulation of large and small cores. The three did not show the theoretical result of 710>670>660 in terms of multi-core score. In addition, because 660 has a higher frequency, Meizu 15 with Snapdragon 660 has the highest score in GeekBench's multi-core score, but the multi-core score gap between the three is very small. (Xiaomi 6X, which is also equipped with Snapdragon 660, is also slightly ahead of 710 and 670 in the GeekBench run, so the 660 on Meizu 15 is not an exception.)
In terms of RAR single thread and pi score, 670 also performs slightly worse than 660. The reason may be that 670's dominant frequency is lower than 660, and 670's core frequency regulation is not so active.
GPU runs
In terms of GPU run points, 670 is no exception. The score of 670 is stable between 660 and 710. The score of 670 is basically in the middle of 660 to 710. The gap between 670 and 710 is less than that between 660 and 670. The performance of Adreno 615 is very close to that of Adreno 616.
game
Model: R17 Game: Stimulate the battlefield Time: 15 minutes
Model: Meizu 15 Game: Survival of the Jedi: Stimulating the Battlefield Time: 15 minutes
In Survival of the Jedi: Stimulating the Battlefield, OPPO R17, the representative model of Snapdragon 670, can only be turned on to "HD" at the highest picture quality, and the maximum frames are limited to 30 frames. From the 15 minute game measurement, whether driving, entering the room, skydiving or running, the frame rate curve of Snapdragon 670 is relatively stable under different scene switching, basically 27-30 frames are running, and most of the time it is 30 frames.
Meizu 15 of Snapdragon 660 has the same performance as R17. Although the theoretical GPU performance of Snapdragon 670 is stronger, they are locked in the "HD picture quality+30 frames" in the game of Jedi Survival: Stimulating the Battlefield, which makes it impossible to open the gap between the two.
Model: R17 Game: Glory of the King Abyss 5V5 Time: 5 minutes
Model: Meizu 15 Game: Glory of the King Abyss 5V5 Time: 5 minutes
Since Glory of the King itself has low performance requirements for SoC, we directly selected the abyss chaos mode to test. The image quality of the test is the highest. HD display and multi-threaded mode have been turned on. Whether it's Snapdragon 670 or 660, both of them basically run at full frame of 60 frames at the highest picture quality. Most group battles are maintained at 58~60 frames, and there are few frame drops in group battles. Both of them can maintain more than 50 frames in case of frame drops. In addition, both of them will have frame dropouts when purchasing equipment in the store, which can be as low as 40 frames. However, the scene itself does not need too high frame rate, which has little impact on the game experience.
Pressure test
Meizu 15 CPU pressure test for 6 minutes
Maximum temperature of Meizu 15 front and back
In terms of stress test, the frequency of the 660 sized core of Meizu 15's Snapdragon has been fluctuating up and down, showing a periodic regulation curve. The frequencies of the large and small nuclei of Snapdragon 660 are changing all the time, and it is difficult to reach the high frequency of both. Either the large nucleus is high frequency and the small nucleus is low frequency, or the small nucleus is high frequency and the large nucleus is low frequency. The frequency jumps up and down, showing an obvious cyclical trend. At the highest point of the curve, the large and small nuclei of Snapdragon 660 are high frequency at the same time, but it can only be maintained for a short time, and the frequency will soon go down, go round and begin again.
In terms of fever, after 6 minutes of testing, the maximum temperature of Meizu 15 front is 47.5 ℃, and the maximum temperature of Meizu 15 back is 42.9 ℃.
Xiaomi 8 SE CPU pressure test for 6 minutes
Maximum temperature of front and back of Xiaomi 8 SE
Xiaomi 8 SE can set the temperature control mode in the system, which can be set as the performance mode and the default mode. The system will prompt that in the performance mode, the phone may overheat. We used the default mode in this test.
Xiaomi 8 SE, the Snapdragon 710, performed very quickly. Even in the default temperature control mode, it was almost full range high-frequency in the 6-minute test, with the large core maintaining 2.2GHz and the small core maintaining 1.7GHz. Two low points on the surface in the figure are caused by "the CPU monitoring app flashes back, so the author switches back to the desktop and reopens the monitoring". Not only that, after the test run of Xiaomi 8 SE, the heat of its mobile phone was also very low, and the maximum temperature of the front and back sides of the body was only 39 ℃.
R17 CPU pressure test for 6 minutes
R17 front and back maximum temperature
The Snapdragon 670's performance in this stress test was very unusual. The small core locked 1.6GHz, the large core locked 1.5GHz, and the large and small cores could not reach the full blood state. But the strange thing was that after the test, its frequency immediately went up, and it directly soared to the full blood state of the small core 1.7GHz, and the large core 2.0GHz, which was very strange. Maybe This may be related to the initial system.
CPU call during R17 microblogging
R17 Royal Glory Corps wartime CPU calls
It is worth noting that although the Snapdragon 670 cannot reach the high frequency state during the CPU stress test, the Snapdragon 670 can normally maintain high frequency operation in Tencent Video, Weibo, Taobao, QQ, WeChat and other commonly used apps, especially when users quickly slide the information stream, while in the game, its large and small core frequencies are maintained in high frequency state.
summary
From the test results, the Snapdragon 670 is an iterative update of the Snapdragon 660. In particular, the CPU part of the Snapdragon 670 is generally the same as that of the 660. Although the frequency of the Snapdragon 670 in the CPU stress test is not good, the frequency control of its large and small cores is still OK in daily use and game playing.
Since the Snapdragon 670 and 660 are mid tier SoC products, the game versions corresponding to their models also maintain the mid-range picture quality special effects. Although the GPU score of the 670 is about 20% higher than that of the 660, the game developers still need to adapt with higher picture quality in the later stage.
For those of us who are accustomed to dozens of performance improvements in each generation, Xiaolong 670 seems to squeeze toothpaste a bit. Its CPU is not improved much, and its GPU is increased by about 20%. Its advantages are mainly power consumption and temperature control. The 10nm process and the core structure of 2+6 make its performance slightly improved, as well as its temperature and endurance.
