As for CPU, we can see that the running score of Qualcomm Snapdragon 855 is 90000+, while that of Qualcomm 855 is 1 10000+ close to 120000, which is an improvement. Furthermore, the architecture of "four cores and four small cores" was changed last year, and Snapdragon 855 adopted a three-cluster architecture of 1+3+4. "1" is a large core based on Cortex-A76, and its main frequency is 2.84GHz. "3" is three cores with the main frequency of 2.41GHz; "4" is four small cores with the main frequency of 1.78 GHz.
Snapdragon 855 adopts 7 nm process technology and Kryo 485 CPU. The data performance given by the government has improved by 45%, and the power consumption and calorific value are much lower than those of Qualcomm Xiaolong 845 processor.
GPU: Qualcomm Xiaolong 845 processor scored1.2000+,and Qualcomm Snapdragon 855 processor scored1.4000+. Snapdragon 855 upgraded the GPU to Adreno 640, which is 20% higher than Adreno 630.
With regard to 5G, Snapdragon 855 integrates X24 LTE modem, which supports the downlink rate of up to 2Gbps. However, the 5G modem X50 is not integrated on the SoC, which means that mobile phone manufacturers need to plug the X50 to achieve 5G support.
About AI: Snapdragon 855 still does not use an independent NPU engine, but emphasizes system-level AI acceleration. Hexagon 690 DSP adds tensor processing unit. Qualcomm said that the artificial intelligence performance of Snapdragon 855 is three times that of 845.
The improvement in other aspects actually depends on the optimization and parameter configuration of various manufacturers.
Because Snapdragon 855 mobile platform needs X50 baseband to realize 5G, it is more difficult for manufacturers to design antenna RF than before. How to measure calorific value, power consumption and body size is a difficult problem for many mobile phone manufacturers. Even if Qualcomm can provide a perfect reference design, capital investment will be a great test for manufacturers.
From the performance point of view, the improvement is not great. At least for now, the performance of Qualcomm Xiaolong 845 processor is not weak, and it is absolutely enough. Regarding the news of 5G, in the last two days, many rumors said that the price of 5G mobile phones will reach about 8000 yuan. In fact, this should be regarded as a problem of 5G patents! The real popularity of 5G will wait until 2020, when the price of each mobile phone will return to the normal price.
In addition, Lenovo's press conference has released Qualcomm Snapdragon 855 processor, which is relatively cost-effective, but did not mention 5G. Although Qualcomm Snapdragon 855 processor is very strong, it is not very different from Qualcomm Xiaolong 845 processor in price, so there is not much difference in normal use, except that power consumption and heating will be better controlled and AI will be greatly improved.
Answer over
In Qualcomm series CPU, there must be different gaps between different generations of CPU, and the size of the gap should be analyzed according to the parameters of CPU. The problem with the topic is that we don't fully understand the parameters of the two CPUs.
If you know the parameters of these two CPUs, then the problem will not be confused!
The manufacturing process of Qualcomm Snapdragon 845 is 10 nm, and Qualcomm Snapdragon 855 is 7 nm. The finer the process, the stronger the performance.
Snapdragon 845 adopts the third generation kryo CPU architecture, and Snapdragon 855 adopts the fourth generation kryo CPU architecture. Compared with Snapdragon 845, Snapdragon 855 will consume less power.
Snapdragon 855 is superior to Xiaolong 845 in manufacturing technology and architecture.
The core frequency of Qualcomm Snapdragon 845 is 4 A75 cores (2.8GHz)+4 A55 cores (1.8 GHz); The core frequency of Qualcomm Snapdragon 855 is 1 A76 large core (2.8GHz)+3 A75 small cores (2.4GHz)+4 A55 small cores (1.8 GHz);
The higher the CPU frequency, the stronger the performance. Compared with Snapdragon 845, the small core of Snapdragon 855 remains unchanged, and the newly added A76 core will greatly improve its performance by about 45%.
In terms of the number and frequency of cores, Snapdragon 855 is superior to Xiaolong 845.
Qualcomm Snapdragon 845 built-in graphics card Adreno 630, Qualcomm Snapdragon 855 built-in graphics card Adreno 640. According to official data, the performance of Adreno 640 is 20% higher than that of Adreno 630.
Compared with Adreno630, the arithmetic logic units of FP 16 and 32 of Adreno640 are half more, Adreno 640 adopts 7 nm process, and Adreno 630 adopts 14 nm process, which is self-evident.
From the GPU point of view, Snapdragon 855 is better than Snapdragon 845.
At present, most mobile phone CPUs have joined the concept of AI. Artificial intelligence is the big cake of the future, and Qualcomm will certainly not miss it. Qualcomm officially announced that in terms of AI performance, Snapdragon 855 has tripled compared with Snapdragon 845.
Qualcomm Snapdragon 855 adopts the fourth-generation multi-core AI engine, and its operation speed can reach more than 7 trillion times per second.
In terms of AI performance, Snapdragon 8 55 is superior to Xiaolong 845.
Snapdragon 845 baseband is LTE Cat. 18 (download) /Cat. 13 (upload), Snapdragon 855 baseband is LTE Cat.20 (download) /Cat. 13 (upload), and Snapdragon 856 integrates X50 5G modem.
X50 5G is amazing. It faces 5G terminals. 5G is coming, and it will not affect the use of 5G because of the hardware problems of mobile phones.
From the baseband point of view, Snapdragon 855 is superior to Xiaolong 845.
Camera is an indispensable function of mobile phone, and users use it every day. Good camera support is also an important index to evaluate the CPU of mobile phones.
Snapdragon 855 supports 48 million pixels+22 million pixels, and Snapdragon 845 supports 32 million pixels+160,000 pixels.
Snapdragon 855 is better than Snapdragon 8 45 in camera support.
Is there a big gap between Snapdragon 845 and Snapdragon 855? My answer is very big. This mainly comes from the upgrading of technology and architecture, although only 45 and 55.
First, the process is upgraded. The official data is that the CPU performance has improved by 45%, and the daily use performance is stronger. Due to the progress of process technology, the overall power consumption will be reduced a lot. The following are descriptions of some parameters. The official data given by GPU is a performance improvement of 20%. But there is no data on the improvement of energy efficiency ratio. Other aspects of improvement Hu Pharmacist's improvement in AI performance and SIP. On the whole, 855 is much higher than 845. After all, the combination of A76 architecture and 7nm can be said to be the golden combination in recent years. It is estimated that Apple's mobile phone will soon be equipped with 7 nm CPU.
From the specific specifications,
The CPU part is based on the modification of A76 architecture. Officially called Kryo485. It provides eight nuclear, three-cluster, large, medium and small architecture design, with super core, personal performance core and Cisco efficiency core. The main frequency of the super core is 2.84GHz, the performance core is 2.42Ghz, and the efficiency core is1.8mhz. The Snapdragon 855 of the GPU part integrates adrenaline 640, and supports Vulkan 1. 1API, 10bitHDR, 4K HDR display, H.265 specification and VPP.
Therefore, Snapdragon 855 is not only a simple upgrade, but also a big upgrade from the inside out. I believe this upgrade will bring us different experiences and surprises next year, and we are waiting for good news.
Lenovo Chang Cheng has been excited recently. Lenovo Z5 pro equipped with Snapdragon 855 slaughtered Ann Bunny with "368,480 points", 60,000 points higher than Kirin 980. About 70,000 points higher than Snapdragon 845. Xiaomi, who was originally prepared to start, felt wronged and wanted to cry. Fortunately, Qualcomm felt sorry for Xiaomi, and staged an intimate play of @ Xiaomi.
Parameter comparison:
Snapdragon 845:
Snapdragon 855:
Snapdragon 855 is about twice as large as Snapdragon 845, which has exceeded 10000, not only in single core but also in multi-core.
Summary:
This time, Snapdragon 855 is a connecting link, the last stick of 4G and the first stick of 5G. Generally speaking, it is much better than Snapdragon 845.
It seems that 855 and 845 are only one generation apart, but in fact, the gap between Snapdragon 845 and Snapdragon 855 is very big!
First of all, compared with the manufacturing process, Snapdragon 855 chip adopts the most advanced 7nm process, while Snapdragon 845 chip is built based on 10nm LPP process. Don't underestimate this 3nm, it is at least one year ahead in technology.
In terms of CPU, Qualcomm Snapdragon 855 adopts 8-core structure design. With more core threads, the performance of the chip will naturally improve, but the power consumption of the chip will also increase. In order to avoid high power consumption, Snapdragon 855 adopts the combination of 1 super core +3 large cores +4 small cores, with super cores for complex tasks and small cores for simple tasks, which not only ensures performance, but also saves power consumption.
In terms of GPU, Snapdragon 855 adopts a brand-new Qualcomm Adreno 640 GPU, which improves the graphics rendering performance by at least 20% compared with Snapdragon 845 GPU. Therefore, Snapdragon 855 is far ahead of Xiaolong 845.
Qualcomm Snapdragon 855 has been released for some time, and it only exists on PPT at present, but it is an indisputable fact that Qualcomm Snapdragon 845 has become history. With the sale of Qualcomm Snapdragon 855 mobile phones, we can see how big the gap is.
As usual, let's look at the data first:
First, the process technology is different: 845 adopts the second generation 10 nm process, and 855 adopts the 7nm TSMC process, which is the common process of all flagship processors at present.
Second, the architecture (CPU) is different. 845 is the third generation eight nuclear Kryo385C architecture (composed of four A75 cores at 2.8GHz and four A53 cores at 1.8GHz), while 855 is the fourth generation Kyro485 architecture and the eight nuclear architecture at 1+3 +4 (frequencies are 2.84 GHz respectively).
Due to the improvement of architecture and technology, the CPU of Qualcomm Snapdragon 855 has been significantly improved, and its performance has been improved by 45% compared with that of 845.
Third, the GPU is different. 845G PU is Adreno630 and 855 is Adreno 640GPU. Because Qualcomm's GPU has always been a strong item, the GPU has not soared by nearly 50% like A 12 and 980, but has been upgraded by 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, and specially adds tensor accelerator for AI to support the fourth generation AI engine. It can achieve more than 7 trillion operations per second (7TOPs), which is three times higher than Snapdragon 845.
In addition, Qualcomm 855 also supports 3D acoustic sensors, which is the first commercial solution in the world to support off-screen ultrasonic fingerprint identification. Since Qualcomm is also a major member of the 5g standard, Qualcomm 855 can also be inserted into the 5G baseband.
At present, there are very few Qualcomm 855 mobile phones released, which are basically internal tests and have not been sold publicly. However, according to the situation revealed by major running software, the running performance of 855 is very amazing. But I think the running score of 845 can be optimized to 30w (Ann Bunny), so don't be too obsessed with running scores.
Generally speaking, due to the improvement of process technology, architecture upgrade and 5G communication, 855 has been significantly improved on the basis of 845 (compared with 845 and 835), and the gap is still quite large.
I am Xiansen, a free and pure science and technology fan, and I am a distracted digital controller. Welcome old friends to discuss and exchange and make common progress.
It has been one month since Qualcomm Snapdragon 855 processor was officially released. In a sense, this is the key chip that determines the performance and sales of most Android camp mobile phones in the coming year. Most Android mobile phone manufacturers are eager to grab the first order of Snapdragon 855, and are in a state of "waiting for meters".
But a month ago, Qualcomm just released this flagship processor. And gave some data at the press conference. For this "biological child", Qualcomm will naturally collect good data, which may not be fair. Recently, foreign anandtech made a detailed evaluation of Snapdragon 855: this is the first independent third-party evaluation report of Snapdragon 855. Worth knowing.
First, present a parameter comparison table of Xiaolong 855 and Snapdragon 845:
Ann Bunny and Geekbench Test
Before the hard-core test, Ann Bunny and Geekbench tests were routine tests in rows. Snapdragon 855 ran more than 360,000 points on Ann Bunny. At present, the Android camp ranks first. The CPU performance is equivalent to Kirin 980, slightly lower than Apple A 12. GPU partially conforms to apple A 12, which is higher than Kirin 980.
In Geekbench, Snapdragon 855 scored over 3,500 points, slightly higher than Kirin 980' s 3,300 points. However, compared with the 4200+ of Apple A 1 1 and the 4800+ of Apple A 12, the gap is not small. Even compared with Exynos 98 10, there is still a gap of about 300 points. (However, the energy efficiency ratio of Exynos 98 10 is not good, and the performance improvement at the expense of power consumption and heat generation is meaningless). In terms of multi-core, the performance of 1 1000+ is already the highest level of mobile phones, which is not bad compared with Apple's A 12 processor.
The Big Problem of Snapdragon Series Processors: Memory Delay
Since last year's Snapdragon 845, Qualcomm has added a third-level system cache between cache and memory. This can effectively improve the efficiency of the system and reduce the delay caused by accessing memory. However, this seems to be a double-edged sword, and increasing the first-level cache also increases the memory latency by 30%. This problem limits the performance of 845 to some extent.
But this year's Snapdragon 855 did not solve this problem well. The measured memory delay of Snapdragon 855 is only slightly better than that of Snapdragon 845. This may be due to the higher frequency LPDDR4X 2 133MHz memory. It's not a design improvement. Compared with Kirin 980 with 4MB system cache, Snapdragon 855 is 20% slower in response time.
CPU performance and power consumption test
In the CPU performance and power consumption test, Snapdragon 855 performed well.
Compared with 845, the performance of SPECint2006 is improved by 565,438+0%, the CPU energy efficiency ratio is improved by 39%, and the performance of SPECfp2006 is improved even more, reaching 665,438+0%, which is 4% and 9% higher than that of Kirin 980, respectively. This also reflects that the performance of Snapdragon 855CPU has been improved, and the relative power consumption has been well controlled. This year's Snapdragon 855 mobile phone will have better heat control and better battery life while improving its performance.
Artificial intelligence performance
In addition to CPU and GPU, Qualcomm also focused on the AI performance of Snapdragon 855. On Snapdragon 845, the vector pipeline of hexagon 690 is twice that of hexagon 680. Theoretically, the performance of image processing and AI reasoning will be improved by 2.5-3 times. Unfortunately, at present, the API of Hexagon 690 tensor acceleration unit is not perfect, that is to say, the port supporting AI acceleration has not been opened to the public. At present, only personal test software in Qualcomm can call Hexagon 690 tensor unit.
Therefore, the current test results show that Snapdragon 855 is slightly weaker than Kirin 980 in AI, but with the improvement and opening of the port. This disadvantage should be made up soon.
GPU:
Compared with A 12, the peak performance of Adreno 640 GPU is still far behind, but the energy efficiency ratio is good. The average power consumption of GFXbench3. 1 off-screen rendering is 4.44W, A 12 peak state 17.36fps/W, and the energy efficiency in down-conversion state is 20.18 fps/w. 855 is 16.05fps/W, 845 is 1 1.99fps/W, 980 is 1 1.93fps/W, and the overall energy efficiency ratio is improved by 30% compared with 845.
Generally speaking, the performance of Snapdragon 855 is not greatly improved, but the energy consumption ratio is much better than other processors in Anzhuo camp. Compared with apple A 12, it is not inferior. Compared with Snapdragon 845,855, the transistor scale is increased by 50%. Therefore, Qualcomm should increase the energy consumption ratio by increasing the GPU scale and reducing the working frequency.
To sum up, Snapdragon 855 is the flagship processor of the Android camp this year, and its performance is still the best in the Android camp. Compared with the Apple A 12 processor in the iOS camp, it is not inferior (except that the single-core performance is obviously weak). Compared with last year's Xiaolong 845 processor, this year's 855 is in terms of performance: the CPU is improved obviously, the GPU is improved by 20%, and the AI is greatly improved. The improvement of energy efficiency ratio in three aspects is more obvious than the improvement of performance.
It can be seen that Qualcomm's promotion of processors mainly focuses on the energy efficiency ratio. Imagine that if the performance of this generation of processors is blindly improved, not only the fluency of users will be limited. On the contrary, it will increase the heat and power consumption of the mobile phone and affect the battery life experience. It can be seen that the performance upgrade of Snapdragon 855 is quite stable this year. As consumers, the rest is waiting for the release of the first batch of Snapdragon 855 flagship machine. Buy early and use early. In the coming year, there is no more powerful processor in the Android camp than Snapdragon 855.
Although Snapdragon 855 has not been officially used, mobile phones are basically 845. But from the data level, the gap is really big!
Let's start with Snapdragon 845. This configuration on the current mobile phone chip can basically meet all the needs of users for mobile phones. The second generation 10 nm technology, the third generation eight nuclear as the processor, and finally the GPU, which has always been Xiaolong's strength, have kept the 845 in the ranks of high-end machines.
But the appearance of 855 can be said to have changed such a face. Although 855 has not been put into use, it is still in the internal testing stage. But after his various data streams came out, they were basically confirmed. 855 adopts 7 nm TSMC, the fourth generation eight nuclear processor, and the GPU is improved by about 20%.
This gap is already obvious. Due to the different manufacturing processes, it also directly determines the endurance of the chip, and the 855 can be said to be a lot ahead in this respect. The adoption of the fourth-generation eight nuclear processor directly improves the performance of 855 by 45% compared with 845, so the gap is still very large.
Generally speaking, 855 can be said to make 845 a thing of the past, because all aspects of the upgrade of 855 will be more suitable for the current mobile phone industry. In the face of the emergence of 5G, 855 has no pressure.
855-845= 10. That's it.
Not too big, the main gap is ai. Of course, 855 is even cooler, and 10nm can't hold a75. There is also 855 supporting 5g, which will be popularized in May and June next year, and 5g should be commercialized one after another. The U.S. Emperor just announced the commercialization of 5g in 15 city. When 5g comes out, the 4g signal is bound to be suppressed.