In recent months much has been made of the refresh rate on the screen of the mobile, that if 90 hertz, 120 hertz, that if the tactile response of 180 hz. How come so much history with the hertz? Why should they care?
We look to fund all you need to know about this technology, where it comes from, what it is, why not and mobile phones with the best screens in terms of refresh rates.
Introduction: what is a hertz, or Hz
It is a measure of the metric system international. Your name is part of Hertz, a German physicist who lived during the 1857-1894. It is a scale designed to measure the cycles per second, a very important measure in the physics of waves, as well as the world of electronics.
Heinrich Rudolf Hertz, German physicist who discovered the effect that is ended up referred to as hertz.
A hertz is a measure for the frequency and according to each electronic component has a series of implications. These would be some of the most relevant in the world of technology:
- The hertz in the processor: at the structural level, a processor is in an area full of millions of transistors to level the nano. These transistors are oscillating in binary values (0 / 1) in an order of GHz. For example, a processor whose maximum speed is 2.8 GHz means that its transistors are able to change of state 2.800.000.000 of times per second. This makes the speed in hertz is a measure of performance.
- It is important to consider in this processor that the architecture of these also has a big impact on performance, and that a processor that has the least hertz can be much faster to have an architecture that is more rapid.
- The hertz in telecommunication: wireless connections also use the hertz as a measure. On this occasion, is used to generate the electromagnetic waves. These waves transmit the information to hover and allow your devices to communicate without cables. Every wave has a frequency and wavelength characteristic.
- The simplest example is that of WiFi, and it is very likely that in your router there are two networks, one 2.4 GHz and one 5 GHz. Here you can easily perceive the difference between frequency and wavelength, since the WiFi 5 GHz, you will perceive that it is faster but you will also lose coverage when you zoom out a bit, as waves of 2.4 GHz provide better coverage for a lower speed.
- The hertz on the screen: this is the discussion of fashion, and is that in recent months there have appeared several models with refresh rates spectacular. Higher the refresh rate, the better feeling of smoothness and touch response.
The mobile screen has two refresh rates
The refresh rate on a screen is directly related to the frames per second. If a screen is 60 hertz, it means that each pixel can change color 60 times a second, if you have 90 you can change to 90 times per second, and if you have 120, you may change your color up to 120 times.
What you see on screen, whether it be a background screen, an internet page, a video or a game is not more that a continuous succession of frames. The feeling of fluidity is marked by the number of times that a screen is able to modify its state. This part is important when measuring the movement, as you’ll notice that the animation is much smoother.
Usually, the best test to quickly check from your browser the importance of fluency is the UFO Test. It is a test that shows the same animation of a ufo at different refresh rates, being able to see the differences between the better fluidity of your screen, and rates reduced.
On the other hand, the screens they also have a refresh rate touch, a rate that while we cannot visually perceive, if that has a positive impact on the experience of use. This refresh rate does not serve to show anything, but that refers to the amount of times the touch panel is checking to see where we’re playing. This rate matter more to the speed of response to touch, in addition to contributing to a better detection of gestures.
Not all content will benefit from the same rates of soft drink
If you are thinking of getting a new mobile and you are beginning to read for all sides on these refresh rates it is possible for you to ask yourself do you really need? Are you really going to notice and enjoy? Generally yes, but there are a number of conditions that you must consider:
- The system interface is going to be felt more soft: this perception is going to be when you open an app, open the notification bar or simply scrolling in a website or social network.
- Messaging applications: does not have much relevance, because the messages are usually the content of static nature.
- Photo: relevance zero, because normally the viewer of the photo application is usually less than 30 frames per second and you’re not going to appreciate any change.
- Video recording: relevance zero, because the most of cameras record as much as 60 images per second.
- Games: the game has to be prepared to issue more than 60 images by segundi, and if so, it’s one of the areas that best are appreciated.
- Here it is important that not only the game is ready and you have the screen, but in addition the mobile phone has sufficient power.
- Multimedia content: in the same way that video is recorded at 30 or 60 images per second and movies at 24 / 48 images per second, the high rate of frames does not give any improvement when watching videos.
The best mobile screen: all models compatible with high refresh rates
- 144 Hz:
- The nubian Network Magic 5G.
- 120 Hz:
- Samsung Galaxy S20, S20+ and S20 Ultra.
- Oneplus 8 Pro.
- Oppo Find X2 Pro.
- Asus ROG Phone 2.
- Razer Phone Razer Phone 2.
- 90 Hz:
- Xiaomi Mi 10 and My 10 Pro.
- Huawei P40 Pro.
- Oneplus 8, 7T, 7T Pro and 7 Pro.
- Nubia Redmagic 3 and 3S.
- Asus ROG Phone.
- Google Pixel 4 and 4 XL.
- realme X50 Pro, X2 Pro, realme 6 and realme 6 Pro.
- 60 Hz:
- All mobile phones on the market.
The entry What are the hertz, how they influence the mobile phone’s screen and what are the best first appears in The Android Free.