Qualcomm Snapdragon 855 has been released for some time and currently only exists on PPT. However, it is an indisputable fact that Qualcomm Snapdragon 845 has become history. As Qualcomm Snapdragon 855 mobile phones are launched one after another, we will You can see how big the gap between the two is.
As usual, let’s take a look at the data first:
First, the process technology is different: 845 uses the second-generation 10-nanometer process, and 855 uses the 7nm TSMC process. This is A common process for all current flagship processors.
Second, the architecture (CPU) is different. The 845 is the third-generation eight-core Kryo385C architecture (composed of four A75 large cores at 2.8GHz and four A53 small cores at 1.8GHz), while the 855 is the third-generation eight-core Kryo385C architecture. Four generations of Kyro485 architecture, 1 3 4 eight-core architecture (frequency: 2.84GHz 3*2.42GHz 4*1.8GHZ).
Due to the improvement of architecture and technology, the CPU of Qualcomm Snapdragon 855 has been significantly improved, with a performance improvement of 45% compared to the 845.
Third, the GPU is different. The 845G PU is Adreno630, while the 855 is Adreno 640GPU. Since Qualcomm’s GPU has always been a strong point, the GPU has not skyrocketed by nearly 50 like A12 and 980, but Regular upgrade 20.
Other aspects: Qualcomm 855 integrates Hexagon 690 DSP digital signal processor, Spectra 380 ISP image signal processor, Snapdragon X24 2Gbps high-speed baseband and other modules. It adds a tensor accelerator specifically for AI and supports the third Fourth generation AI engine. It can achieve more than 7 trillion operations per second (7TOPs), which improves AI performance by 3 times compared to Snapdragon 845.
In addition, Qualcomm 855 also supports 3D acoustic wave sensors, which is currently the world’s fastest The first commercial solution to support under-screen ultrasonic fingerprints. Since Qualcomm is also a major member of the 5G standard, Qualcomm 855 can also be plugged into a 5G baseband.
There are very few Qualcomm 855 mobile phones released so far. They are basically still in internal testing and have not yet been sold to the public. However, according to the results revealed by major benchmark software, the 855’s benchmark results are very amazing. But consider that the running score of 845 can be optimized to 300,000 (AnTuTu), so don’t be too obsessed with the running score.
In general, due to the promotion of process technology, architecture upgrades, 5G communications and other aspects, 855 has significantly improved on the basis of 845 (compared to the comparison between 845 and 835), the gap is still quite large .
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As the successor of Snapdragon 845, Snapdragon 855 is used to replace Snapdragon 845. It has great improvements in CPU, GPU, AI, etc. The following is a comparison of these two Socs.
CPU aspect
GPU aspect
Baseband aspect
Other aspects
In short, Snapdragon 855, as a replacement for Snapdragon 845, has greatly improved its performance. Most of the flagship phones currently released use the Snapdragon 855 processor. Is there a big difference between Snapdragon 845 and Snapdragon 855?
Whether the gap is big or not, let’s look at the running scores first. Although the running scores cannot explain anything, for Android phones, the higher the performance, the stronger the running scores, and this will not change.
In terms of CPU, it can be seen that the Qualcomm Snapdragon 845 processor has a running score of 90,000, while the Qualcomm Snapdragon 855 has a running score of 110,000 and close to 120,000. promote. Furthermore, the Snapdragon 855 has changed from last year’s “four major cores and four small cores” architecture to a 1 3 4 three-cluster architecture. "1" is a large core based on Cortex-A76 with a main frequency of 2.84GHz; "3" is three medium cores with a main frequency of 2.41 GHz; "4" is four small cores with a main frequency of 1.78 GHz.
The Snapdragon 855 uses a 7-nanometer process technology and a Kryo 485 CPU. The official data performance has been improved by 45%, and the power consumption and heat generation are much higher than the Qualcomm Snapdragon 845 processor.
In terms of GPU: the Qualcomm Snapdragon 845 processor has a running score of 120,000, while the Qualcomm Snapdragon 855 processor has a running score of 140,000. Snapdragon 855 upgrades the GPU to Adreno 640, which is an improvement of 20 compared to Adreno 630.
Regarding 5G: Snapdragon 855 integrates an X24 LTE modem and supports a maximum downlink rate of 2Gbps. However, the 5G modem X50 is not integrated on the SoC, which means that mobile phone manufacturers need to plug-in the X50 to achieve 5G support.
Regarding AI: Snapdragon 855 still does not use an independent NPU engine, but emphasizes system-level AI acceleration. A tensor processing unit is added to the Hexagon 690 DSP. Qualcomm said that the AI ??of Snapdragon 855 The performance is 3 times that of 845.
Regarding improvements in other aspects, it actually depends on the optimization and parameter configuration of each manufacturer. Summary
Because the Snapdragon 855 mobile platform requires an external X50 baseband to achieve 5G, manufacturers are more difficult to design in terms of antenna radio frequency than before. How to measure heat, power consumption and body size are all issues. Difficulties faced by mobile phone manufacturers. Even if Qualcomm can provide a relatively complete reference design, capital investment will be a huge test for manufacturers.
From a performance perspective, the improvement is not very big. At least the performance of Qualcomm Snapdragon 845 processor is not weak now and is definitely sufficient. As for the news about 5G, in the past two days, Time, many rumors say that the price of 5G mobile phones will reach about 8,000 yuan. In fact, this should be regarded as a 5G patent issue! The real popularization of 5G will have to wait until 2020. By that time, the price of each mobile phone will return to the normal price.
Furthermore, Lenovo’s press conference has released the Qualcomm Snapdragon 855 processor. The price is relatively cost-effective, but there is no mention of 5G. Qualcomm Snapdragon 855 processor Although the processor is very powerful, in terms of price, it is not very different from the Qualcomm Snapdragon 845 processor, so there is not much difference in daily use, except that the power consumption and heat generation will be better controlled. Furthermore, It is a big improvement in AI.
Answer completed
Recently, Lenovo Changcheng Ke was excited. The Lenovo Z5 pro equipped with Snapdragon 855 defeated Antutu with “368,480 points”. It is 60,000 points higher than Kirin 980; about 70,000 points higher than Snapdragon 845. Xiaomi, who was originally preparing to launch the product, felt aggrieved and wanted to cry. Fortunately, Qualcomm felt sorry for Xiaomi and staged an intimate scene @小米.
Parameter comparison:
Snapdragon 845:
Snapdragon 855:
Not only in single The core performance has improved rapidly. The multi-core performance of Snapdragon 855 is basically about twice that of Snapdragon 845, and it has exceeded 10,000 points.
Summary:
This time, Snapdragon 855 is a link between the past and the next. It connects the last step of 4G and the first step of 5G. Overall It seems that it is much improved than Snapdragon 845.
Show your results directly!
855 845, the strongest is 855.
If you don’t understand Qualcomm Snapdragon, let’s take HiSilicon Kirin as an example.
980 960
The stronger one is Kirin 980
Two Snapdragon
Benchmark
845: 267000
855: 362000
855 vs. 845
cpu Improved by 45
GPU improved by 20
855 is 7 nanometers
845 is 10 nanometers
Other aspects
855 is also a comprehensive upgrade compared to 845!
However, 855 is only a daily upgrade.
It does not support the so-called "real 5G"
I am still using 845, and I don’t feel any difference in games. Very big.
Being able to play games, other things are not a big problem.
The 855 feels like a transitional processor.
There is a gap between it and the 845, but not a big gap!
The Qualcomm Snapdragon 845 chip is based on Samsung's 10nm process. The architecture continues to use its own 8-core design, and the GPU will be upgraded to Adreno630.
CPU
CPU
2.8 GHz
CPU Core
Octa-core Qualcomm Kryo 385 CPU
CPU Architecture 64-bit
GPU
GPU Architecture
Adreno 630 Vision Processing Subsystem
GPU Model
Qualcomm Adreno 630 GPU
API support
OpenGL ES 3.2
OpenCL 2.0 full
Vulkan
DX12
Charging
Qualcomm Quick Charge support
Qualcomm Quick Charge 4 technology
My mix2s is powered by Snapdragon 845. Very strong and durable!
Snapdragon 855 is a mobile processing platform produced by Qualcomm. It uses TSMC's 7nm process. The CPU uses eight-core Kryo 485 architecture and the GPU uses Adreno 640.
CPU
Processor cores
1 * Kryo 485 Gold (2.84GHz) 3 * Kryo 485 Gold (2.41GHz) 4 * Kryo 485 Silver (1.78 GHz)
Processor bits 64-bit
GPU
Processor core
Qualcomm Adreno 640 GPU
2*256 ALU (Arithmetic Logic Unit)
855-845=10 is the difference
Qualcomm Snapdragon 855 processor is officially released It's been a month. In a sense, this is a key chip that determines the performance and sales of most Android phones in the next year. Most Android phone manufacturers are eagerly looking forward to grabbing the first batch of orders for Snapdragon 855, and are in a state of "waiting for rice to be ready."
However, a month ago, Qualcomm only released this flagship processor. And gave some data at the press conference. For this "own child", it may not be fair to say that Qualcomm will naturally pick up the data. Recently, foreign anandtech made a detailed evaluation of Snapdragon 855: This is the first independent third-party evaluation report of Snapdragon 855. It’s worth everyone getting to know.
First, here is a parameter comparison table between Snapdragon 855 and 845:
AnTuTu and Geekbench tests
In the hard-core test Previously, AnTuTu and Geekbench tests were routine tests for the industry. Snapdragon 855 scored over 360,000 points on AnTuTu. Ranked first in the current Android camp. The CPU performance is on par with the Kirin 980 and slightly lower than the Apple A12 processor. The GPU part is on par with the Apple A12 and slightly higher than the Kirin 980.
In terms of Geekbench scores, the Snapdragon 855’s single-core score exceeds 3,500 points, slightly ahead of the Kirin 980’s 3,300 points. But compared to the 4200 of the Apple A11 and the 4800 of the A12, the gap is still not small. There is still a gap of about 300 points even compared to the Exynos 9810. (However, the energy efficiency ratio of Exynos 9810 is not good, and performance improvement at the expense of power consumption and heat generation is meaningless). In terms of multi-core, the score of 11,000 is already the highest level for mobile phones today, and is no worse than the Apple A12 processor.
The big problem with the Snapdragon series processors: memory latency
Starting with Snapdragon 845 last year, Qualcomm added a level between cache and memory 3MB system cache. This can effectively improve system efficiency and reduce latency problems caused by accessing memory. However, it seems to be a double-edged sword. While adding the first-level cache, it also increases the memory latency by 30%. This problem limits the performance of the 845 to some extent.
This year’s Snapdragon 855 did not solve this problem very well. The measured memory latency of Snapdragon 855 is only slightly better than that of Snapdragon 845. And this may be due to the higher frequency LPDDR4X 2133MHz memory. It's not a design improvement. Compared with the Kirin 980 with 4MB system cache, the response time of the Snapdragon 855 is 20% slower.
CPU performance and power consumption test
In the CPU performance and power consumption test, the Snapdragon 855 performed well.
The performance of SPECint2006 is improved by 51% compared with 845, and the CPU energy efficiency ratio is improved by 39% compared with 845. Compared with 845, SPECfp2006 has an even greater improvement, reaching 61%. Compared with Kirin 980, it is improved by 4 and 9 respectively. This also reflects from the side that while the performance of the Snapdragon 855 CPU has been improved, the relative power consumption is quite well controlled. This year's Snapdragon 855 mobile phones will have better heat control and better battery life while improving performance.
AI performance
In addition to CPU and GPU, Qualcomm also focused on the AI ??performance of Snapdragon 855 . The Hexagon 690’s vector pipeline is doubled compared to the Hexagon 680 on the Snapdragon 845. Theoretically, the performance of image processing and AI reasoning will be improved by 2.5-3 times. Unfortunately, the API of the Hexagon 690 tensor acceleration unit is currently incomplete, which means that the port supporting AI acceleration has not yet been opened to the outside world. Currently, only individual test software made by Qualcomm can call the Hexagon 690 tensor unit.
Therefore, the current test results show that the Snapdragon 855 is slightly weaker than the Kirin 980 in terms of AI, but it will be improved and opened as the ports are improved in the future. This disadvantage should be made up for soon.
GPU:
In terms of peak performance of Adreno 640 GPU, there is still a significant gap compared to A12, but the energy efficiency ratio is good, GFXbench3.1 off-screen rendering The average power consumption is 4.44W. In terms of energy efficiency, the A12 peak state is 17.36fps/W, and the frequency reduction state is 20.18fps/W. The 855 is 16.05fps/W, the 845 is 11.99fps/W, and the 980 is 11.93fps/W. Compared with the overall energy efficiency ratio 845 improved by 30;
Generally speaking, the performance improvement of Snapdragon 855 is not very large, but the energy consumption ratio is much better than other processors in the Android camp. It’s not far behind the Apple A12 either. Compared with the Snapdragon 845, the transistor size of the 855 has increased by 50. Therefore, Qualcomm should have adopted a method to increase the GPU scale and reduce the operating frequency to improve the energy consumption ratio this time.
To sum up, Snapdragon 855 is the main flagship processor of the Android camp this year, and its performance is still the leader of the Android camp. Compared with the Apple A12 processor in the iOS camp, it is not at a disadvantage (except that the single-core performance is obviously slightly weaker). Compared with last year's Snapdragon 845 processor, this year's 855 has a significant performance improvement: CPU has improved significantly, GPU has improved by 20, and AI has improved significantly. The energy efficiency improvement in the three aspects is more obvious than the performance improvement.
It can be seen that Qualcomm’s improvement of processors is mainly focused on energy efficiency ratio. Just imagine that if you blindly improve the performance of this generation of processors, it will not only have limited improvement in user fluency. On the contrary, it will increase the heat and power consumption of the mobile phone, affecting the battery life experience. It can be seen from this point that this year’s Snapdragon 855 performance upgrade is quite robust. As a consumer, the only thing left is to wait for the release of the first batch of Snapdragon 855 flagship phones. Buy early and use early. In the next year, there will be no more powerful processor in the Android camp than the Snapdragon 855. First of all, Snapdragon 845 and Snapdragon 855 are somewhat different in many aspects. The following is a brief introduction to the differences between the two:
First, in terms of price. Price is an easy-to-reach and relatively intuitive feeling for consumers. In terms of chip technology, the Snapdragon 855 uses 7nm while the Snapdragon 845 uses 10nm, which means that the power consumption of the 855 will be significantly reduced. The similar Huawei Kirin 980 also uses the 7nm process. To be honest, the difference in users' direct experience is not particularly big, but it will cause a relatively large difference in price. After all, chips are the foundation of core technology.
Second, the GPU aspect. The GPU serves as the image processing core, and the memory serves as the reading space for processing. According to data, Snapdragon 855 is nearly 20% faster than Snapdragon 845, which has a greater impact on game enthusiasts. These are mainly due to the double upgrade of process and architecture. The current official data is that the CPU performance has been improved by 45%. While the daily performance is stronger, the overall power consumption of the CPU will be lower than that of the Snapdragon 845. Of course, compared with the Kirin 980 , the main frequency of Snapdragon 855 is obviously higher.
Third, kernel upgrade. The Snapdragon 845 uses the third-generation Kryo CPU architecture, with 4 A75 large cores, 4 A55 small cores, and an eight-core design, while the Snapdragon 855 uses the fourth-generation Kryo CPU architecture, with 1 A76 super large core and 3 A76 Medium core, 4 A55 small cores, and eight cores design. There are no changes in the four small cores, and the A76 super large core and medium core are added to the large core.
Of course, in addition to the above, there are other differences between the two. What else do you know?
The Xiaomi mix2s I have uses the Snapdragon 845 processor. It has been used for more than a year now, but compared with the Xiaomi 9 that my colleague recently replaced, the smoothness has not changed much. The biggest difference between the two mobile phones is only reflected in the running scores. The Snapdragon 855 can reach more than 400,000 points, but the Snapdragon 845 only has about 300,000 points. However, there is no obvious performance difference when playing popular mobile games and APPs.
In terms of specifications and parameters, the Snapdragon 855 is only one level higher than the Snapdragon 845, such as upgrading from 10nm to 7nm, and upgrading the CPU architecture from Kryo385 to 485. The performance-level core frequency has been upgraded from 2.8Ghz to 2.84Ghz, and the GPU core and baseband chip have continued to be upgraded. However, except in a few cases, the Snapdragon 855 cannot show significantly better performance than the Snapdragon 845. As for the running scores The huge gap is mostly due to more optimizations made by the new Snapdragon 855.
Don’t think that just because Snapdragon 845 was replaced by Snapdragon 855, it means that Snapdragon 845 has been completely eliminated by the market. This is actually Qualcomm’s business strategy. Snapdragon 855 only replaced Snapdragon 845. The production line before the Snapdragon 845, but the performance of the Snapdragon 845 in all aspects is still better than the current Snapdragon 700 series, second only to the Snapdragon 855. However, the price of the Snapdragon 845 mobile phone that has been gradually discontinued has fallen to a historical low, and the price/performance ratio is better than that of the Snapdragon 845. The Dragon 855 model is much higher. In fact, my mix2s phone can still run the latest large-scale mobile games with high image quality and smoothness, and it is easy to use in daily use, so don’t be fooled by the performance gap between processors. deceived.
Lei Jun once said: A Snapdragon 845 chip costs 500 yuan, while the cost of Snapdragon 855 is 750 yuan. In terms of cost, Snapdragon 855 is 1.5 times that of Snapdragon 845.
Therefore, we have reason to believe that the performance of Snapdragon 855 is much stronger than that of Snapdragon 845. Unfortunately, due to the poor reputation of Xiaomi 9, the reputation of the Snapdragon 855 chip is also average. Many consumers feel that the experience of Snapdragon 855 and Snapdragon 845 is similar, and there is not much difference.
But what I want to tell you is: Snapdragon 855 is a very powerful chip. Its performance, power consumption, manufacturing process, and running scores far exceed those of Snapdragon 845, which is a qualitative leap.
Let’s first take a look at the parameters of the Snapdragon 845 chip.
1. Process
The process of Snapdragon 845 is not outdated, using TSMC’s 10nm process.
As of 2022, many mobile phone manufacturers are still using 10nm and 14nm process chips, such as SMIC’s Kirin 710A.
It can be seen that chips using the 10nm process technology can meet the daily needs of consumers without major problems.
2. CPU architecture
Snapdragon 845 uses the third-generation Kryo architecture, an architecture of four A75 large cores and four A55 small cores, with a maximum frequency of 2.8HZ.
3. GPU architecture
The GPU model of Snapdragon 845 is Adreno630 architecture. This architecture is equivalent to the GPU architecture of Kirin 980, and the power consumption optimization is very good.
Fourth, running score
Xiaomi Mi 8 equipped with Snapdragon 845 scored 290,000 points, which was considered a flagship level at the time, close to the Huawei Mate 20 equipped with Kirin 980. 310,000.
Generally speaking, the overall performance of the Snapdragon 845 chip is ahead of the Kirin 970 of the same era and comparable to the Kirin 980.
Snapdragon 855 is Qualcomm’s flagship chip released in February 2018. This chip was very popular in the market when it was released.
I still remember Xiaomi and Lenovo arguing: Who will receive the first Snapdragon 855 mobile phone?
The final result is that Lenovo will launch the Snapdragon 855 chip, while Xiaomi will launch the Snapdragon 855 in mass production.
Because of this incident, many Huawei fans have criticized Xiaomi and Lenovo, thinking that these two mobile phone manufacturers are a bit ugly, and regard the launch of Snapdragon 855 as an honor.
It can be seen that Snapdragon 855 was indeed recognized by the market in that era, and its performance cannot be underestimated.
So what are the parameters of the Snapdragon 855 chip?
1. Process
The Snapdragon 855 uses a 7nm process, which is very mature. The Snapdragon 865, Kirin 980, and Kirin 990 all use this process.
The chips produced by the 7nm process have stable quality and low power consumption, and are more complete than the 10nm process.
2. CPU architecture
Snapdragon 855 adopts the fourth-generation Kryo architecture, which has one A76 large core, three A76 medium cores, and four A55 small cores. Its architecture has been further improved. optimization.
3. GPU architecture
The GPU model of Snapdragon 855 is Adreno640, which supports the fourth generation artificial intelligence engine.
Fourth, running score
Xiaomi Mi 9 equipped with Snapdragon 855 scored 370,000, which ranked first in the Android mobile phone camp at the time, and Kirin 980 could not match it. Fight.
Comparing the parameters of these two chips, we found that Snapdragon 855 is leading in all aspects, which is specifically reflected in the following aspects.
Next, let’s take a look at the advantages of Snapdragon 855.
1. Process comparison
The 7nm process is more advanced than the 10nm process. It can accommodate more transistors per unit area, and its performance and power consumption are better.
2. CPU comparison
Snapdragon 855 uses the fourth-generation Kryo architecture, with eight cores. Although the core number of Snapdragon 845 is also eight cores, Snapdragon 845 is a third-generation Kryo architecture with a maximum frequency of 2.8HZ, while the maximum frequency of Snapdragon 855 is 2.84 2.42HZ.
Due to the difference in architecture, the CPU performance of Snapdragon 855 is 45% higher than that of Snapdragon 845.
Of course, I have reservations about this 45% improvement. After all, there is not much difference between Xiaomi 9 and Xiaomi 8 in daily use, and users are not informed of the performance improvement.
3. GPU comparison
The GPU model of Snapdragon 855 is Adreno640, and the GPU model of Snapdragon 845 is Adreno630.
It can be seen from the model that the GPU architecture of Snapdragon 855 is more advanced, so the official gives a reference value: the GPU performance of Snapdragon 855 is 20 times higher than that of Snapdragon 845.
In daily experience, the GPU performance improvement of 20 is not much felt, so I think this gap is negligible.
4. AI intelligence
Kirin 970 is the first chip to support AI artificial intelligence, but there are too few application scenarios for AI artificial intelligence. For consumers, this is the icing on the cake. The functionality is innocuous.
This time, Snapdragon 855 supports the fourth-generation artificial intelligence engine, and its AI performance has been greatly improved.
Qualcomm officially stated that the AI ??performance of Snapdragon 855 is three times that of Snapdragon 845. I think this data is a bit exaggerated, purely a gimmick, and has no reference significance.
5. Running score comparison
To measure the performance of a processor, the most intuitive data is the running score.
Xiaomi Mi 8 equipped with Snapdragon 845 scored 290,000, and Xiaomi Mi 9 equipped with Snapdragon 855 scored 370,000.
The 80,000 running score well reflects the gap between the two chips.
Let’s just say that in the 2017-2018 period, the performance of Snapdragon 845 was completely sufficient.
As the flagship processor, Snapdragon 845 can play large-scale games and run apps smoothly.
As an upgraded version of Snapdragon 845, the performance of Snapdragon 855 is definitely stronger.
But for most consumers, Snapdragon 855 has excessive performance, and it is not much different from Snapdragon 845 in use.
Therefore, it is a bit exaggerated to say that the CPU performance of Snapdragon 855 is 45% higher than that of Snapdragon 845, the GPU performance is improved to 20%, and the AI ??capability is improved to 300%.
In other words, just look at the parameters on paper, don’t take them seriously.
With the launch of Snapdragon 865, Snapdragon 888, and Snapdragon 8 platforms, Snapdragon 845 and Snapdragon 855 have gradually faded out of people’s sight.
But the performance improvement of Snapdragon 855 reflects people’s unremitting pursuit of technology.
Only by continuously introducing products with higher technological content can our living standards continue to improve.
Enjoy the fun brought by technology, this is the meaning of the existence of mobile phone chips.