Recently, the glory new product launch will finally unlocate the "scary technology" mystery for preheating, which is GPU Turbo technology. From the introduction of the PPT, it is to improve the performance of the GPU, which reduces power consumption, allowing mobile games to play more smooth, but the body does not excessively hot, the battery will not brush down the electricity.
However, when the glory executives explained the principles of GPU Turbo technical principles at the press conference, they used some language unknown languages, let the writer friends who have been hardware reports for many years. I feel very happy, I can't figure out how? Implemented.
Human 5000-year history tells us that there is still no technical leap in the flying disc. The unknown things can always be explained with existing similar things. I will try to analyze the GPU Turbo to analyze the GPU Turbo through some existing semiconductor industry technology.
The first phase analysis: Why did Yu Chengdong do not talk about the CPU?
First, at the press conference, repeatedly emphasized "enhanced GPU performance" without what happened on the CPU.
Second, Yu Chengdong uses a comparative picture "single-thread winning multi-thread", but did not tell the "something" work in single-thread mode. What I know, only when describing the CPU in the semiconductor industry, is a single thread or multi-thread.
Here, I got a preliminary guess: A operation in GPU Turbo technology: Turn off most CPU cores (one only), and overclocking the GPU, thereby enhancing the performance of game performance.
What did I get this "scary" guess? Because it is a precedent. As early in 2010, Intel gave his CPU a new name "smart processor", which added a technology called "Turbo Mode", the Chinese name is Turp. Turbo technology has a variety of modes, where the game mode is close or down to most cores, only one core work (overclocking mode), to increase game performance. This is because when running the game, multi-core does not play too much advantage, but it is a great help of single-core high-frequency to game improvement.
Everyone can see that although glory's GPU Turbo does not say that they have helpful when playing games, but in the PPT demo, only game examples are used. It can be speculated that the GPU Turbo has not accelerated most of the applications other than games.
In addition to games, these are also GPUs to do.
Is there a relationship between CPU and GPU?
Before proceeding next, let's talk about the division of CPU and GPU.
The CPU is the brain of the computer, the role is to carry out universal operations, as long as it is a power-on state, this brain has to be awake, but its power consumption will automatically increase and decrease with the work intensity changes.
The GPU is a graphical processor. The main task is 3D operation (of course, the PC field will also use it to accelerate, but actually "universal", only in some cases, it is 3D game When you don't play games, it is in a state of approximately sleep. Why do you sleep? Because the GPU is amazing at the full speed of running at full speed, if your computer or mobile phone GPU is in a high-speed operation, the fuselage will be hot.
In the conventional computer architecture, the CPU and GPU are completely separated, each has various power supply lines, even fever, and all hair all hair, there is no big interference between each other. However, in the high-intensive thing of the mobile phone main chip, the CPU and GPU are integrated in a chip, both cover a bed quilt, share a TDP power consumption.
There is a concept called TDP (heat dissipation design power consumption) in the semiconductor industry. Once the overall power consumption of a chip exceeds TDP, it may have overheating, and there may be hidden dangers of failure. Therefore, the power control function of the chip automatically assigns the power consumption of the entire chip, and is controlled within TDP power consumption. If the CPU and GPUs are running at full speed, they will inevitably take the phenomenon of rushing.
Second stage analysis: 啥 啥 处理 GPU and CPU processing bottleneck?
At the glory conference, Yu Chengdong talked about a sentence "GPU Turbo dongned the EMUI operating system and the processing bottleneck between GPU and CPU, and realized the great improvement of the graphic processing efficiency of the entire system." Please pay attention to the word "bottleneck". How do I brought a bottle between the GPU and CPUs?
Playing computer DIY friends know that low-end CPUs match the high-end GPU, or low-grade GPU with high-end CPU, will cause a "bottleneck" that is not moving. But the same grade CPU and GPU match, there is no such problem. Similarly, the unicorn chip used in the glory mobile phone, the integrated CPU and GPU inside should not exist this bottleneck.
I have used AMD's new APU product, model is 2400g, when playing a game, a serious picture has occurred. 2400G integrates a good CPU and GPU in 2400g, theory to play this game is very smooth. Later I found because the TDP power consumption restriction of this APU caused, the power consumption of the entire chip is limited to 65 watts. When I play this game, the CPU and GPU have a "robbing the quilt" phenomenon, so the picture is dropped.
The solution is not complicated, and the TDP limit is released in the BIOS settings, then the CPU and GPU in the 2400g of the CPU and GPU are free, and the game frame rate is easily held above 60fps.
After this analysis, I have a new guess: Yu Chengdong's "GPU and CPU processing bottleneck" is not a bottleneck of "belling", but both robbed TDP's power bottleneck.
Then why don't he lift TDP limit like a computer? This is because there is no desktop computer's heat dissipation condition. Once the TDP power consumption is exceeded, not only the phone will be hot, and will pass the heat dead machine, and severely burnt the motherboard. This operation doesn't matter on the desktop computer, it can be dangerous on the phone.
How to eliminate this bottleneck? Glory makes a "scary" operation, close most CPU core, only retain the core, saving power, saving the power consumption to the GPU, overclocking the GPU.
Conclusion: GPU Turbo scared essence
In summary, I use a technical man to understand the substance of GPU Turbo technology - in order not to exceed TDP power consumption, close the most CPU core, while overclocking the GPU, to improve 3D game performance.
It's not a new fresh goods, and the PC field has long been there.
Original address https://www.eeboard.com/news/gpu-turbo/
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