How can RP check the "constitution" of Samsung processors when buying a machine| Love to play computer games - 上海419贵族宝贝-上海后花园1314-上海品茶网-阿拉爱上海

Earlier, we introduced the Qualcomm processor View PVS Bin value We can judge the "constitution" of the processor. After Exynos 5422, Samsung can also check the voltmeter of different individuals, so that we can see the different "constitutions" of the processor. Today, we will introduce the method of checking:

When the foreign media Anandtech conducted a detailed evaluation of the MX4 Pro, it found that in the GFXBench test, the power consumption of the Galaxy Alpha using the same SoC was 25% higher than that of the MX4 Pro. Later, they found that the Galaxy Alpha on their hands was the "penultimate" poor constitution (the original constitution was bin, link: ）The MX4 Pro is of medium constitution, and the voltage difference between their GPUs at different frequencies during operation is 62.5mV.

By checking the source code, we can see the worst built voltmeter of Samsung's Exynos processors. The pictures are from 。

First is Exynos 5422 (used by Galaxy S5 3G international version), which is used in 480MHz The working voltage is 1V (Check the vol and clk values, which are respectively represented by the red boxes in the figure).

Then Exynos 5430 (used by Galaxy Alpha and MX4 Pro) 600MHz The working voltage is 1.15V 。

Finally, Exynos 5433 (used by Galaxy Note 4 and Galaxy Note Edge) and Exynos 5260 (used by Galaxy Camera and Galaxy Note 3 Neo). The former is the same as Exynos 5430 600MHz The working voltage is 1.15V , the latter in 667MHz The working voltage is 1.175V 。

After knowing the voltage of the worst "physique", we can check the "physique" of our mobile phones for reference Exynos 5422 , we use RE Manager (in the process No need to obtain root permission Of), opening /sys/devices/11800000.mali/asv_table You can view the GPU frequency of your phone. yes Exynos 5430 and Exynos 5433 For, open /sys/devices/14ac0000.mali/asv_table。 yes Exynos 5260 , open /sys/devices/platform/mali.0/asv_table 。

Next, let's clarify several questions:

1. For the same model or even the same batch of mobile phones, there will be different constitutions, which is the same as the "big eagle" CPU often said in computer DIY. For mobile phones, the ex factory SoC constitutions are also different. As far as the current situation is concerned, Qualcomm and Samsung can view them in different ways, while other SoCs have no way to view them yet.

2. What does a good "constitution" mean? The lower working voltage will obviously save more power. Of course, whether the difference here is large or not depends on the actual use environment. The Exynos processor sets the voltage for different frequencies of the GPU according to different levels. Therefore, when the GPU frequency is high (such as running points, large games and other scenarios), the power consumption may vary greatly, but in daily use, the difference in power consumption may be small.

3. Some mobile phones have a third-party overclocking core, which can overclock, reduce voltage and other operations on the processor. If we manually reduce the voltage, it can achieve the same effect as the high "fitness" SoC, but it is not guaranteed to work stably. In addition, if the SoC has good "physique", it can try to lower the working voltage to obtain better power saving effect.

Finally, let's look at some screenshots of examples:

European Galaxy S5 (SM-G900H, Exynos 5422), the highest 480MHz The working voltage is 0.9125V (The worst case is 1V).

Korean Galaxy Alpha (SM-G850S, Exynos 5430), 600MHz The working voltage is 0.975V (The worst case is 1.15V).

Meizu MX4 Pro, the working voltage at 600MHz is 1.0375V (Worst case scenario 1.15V ）At 550MHz, the working voltage is 1V (Worst case scenario 1.125V ）。 In addition, according to the feedback of many players, The working voltage of MX4 Pro at 600MHz is 1.0375V However, the difference of voltage can only be found at 550MHz and below, and the reason for this cannot be explained.

Port Galaxy Note 4 (SM-N910U, Exynos 5433), 600MHz The working voltage is 1 V (The worst case is 1.15V). In addition, you can see here 1.1V@700MHz However, according to the actual frequency, the GPU of the Exynos 5433 will not reach the high frequency of 700MHz in terms of running scores or games.

Korean Galaxy Note Edge (SM-N915K, Exynos 5433), 600MHz The working voltage is 0.975V (The worst case is 1.15V).

BOC Mobile Galaxy K Zoom (SM-C1158, Exynos 5260), 667MHz The working voltage is 1.1V (The worst case is 1.175V).

In addition, according to some players' feedback, their GPU appears 1.0125V and 0.9875V at 600MHz, so we conclude that The difference of the highest frequency operating voltage of the first level "physique" (i.e. bin) is 0.0125V . So we have the following conclusions:

If the worst physique is considered as "physique" level 0, the Galaxy S5 level in the above screenshot is 7 (worst operating voltage - actual operating voltage/), the Galaxy Alpha and Galaxy Note Edge level is 14, the Galaxy Note 4 level is 12, and the Galaxy K Zoom level is 6. As the voltage of MX4 Pro is 1.0375V at 600MHz, we use the voltage at 550MHz (1V, the worst 1.125V) as the judgment The level of MX4 Pro we have is 10. From the above five mobile phones, it seems that the Korean version of Samsung mobile phones with Exynos processors will be relatively better in "fitness".

After Qualcomm's PVS bin value "brainwashed" everyone, Samsung's bin value judgment "physique" came out again... It seems that we really need to fight for character when buying mobile phones in the future. If it is a parallel mobile phone, users can choose individuals with higher "physique" to purchase. After all, the performance of current high-end mobile phones is good, and the endurance is the "big problem".