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Samsung has added a new generation of 2X Dynamic AMOLED display panels that support variable refresh rate on this flagship series of S21 mobile phones, and it also supports variable refresh rate of 10-120Hz and 1500 nits high brightness on the S21. Ultra high-end. And 120Hz refresh rate can also be activated in WQHD + resolution.
However, past experience from the S20 Ultra tells us that after the screen is turned on at the 120Hz refresh rate, the battery life of the phone will suffer greatly, because the power consumption of the screen increases. So does the S21 Ultra’s variable refresh rate display really solve this problem?
Extended reading: Comprehensive multi-functional flagship: Samsung Galaxy S21 Ultra 5G unboxing sharing
The foreign medium “AnandTech” recently announced the S21 Ultra (Exynos version) screen power consumption test and compared it with the screen power consumption of previous Samsung flagship phones. It turns out that the power consumption of the S21 Ultra is less than that of the S20 Ultra in 60Hz or 120Hz mode; However, they also found that if the 120Hz mode is on, the S21 Ultra screen can be used in a dark environment with an ambient brightness of less than 40 lux The variable refresh rate function appears to be disabled, causing a significant increase in energy consumption.
Extended reading: Samsung Galaxy S21 Ultra Orion and Qualcomm version performance scores, battery life test comparison
In addition, “AnandTech” also mentioned that the Note 20 Ultra, which also uses a variable refresh rate of 120Hz, consumes less power than the S21 Ultra, either 60Hz or 120Hz; “AnandTech” said they are not sure why this is so. However, because they measured the total power consumption of the mobile phone, whether the panel, display controller chip or even the processor of the two models is different, it may be the factor that caused the digital divide.
On the other hand, according to “AnandTech” actual measurement, the S21 Ultra screen can also provide higher screen brightness with lower power consumption. According to the line graph below, the S21 Ultra consumes between 26% and 31% less power than the S20 Ultra under a completely white screen, and the higher the brightness, the greater the energy savings.
And if you use a more realistic test scenario, like browsing the web, when the brightness is set at 300 nits, the S21 Ultra consumes less power than the S20 Ultra due to the variable refresh rate. 27%.
“AnandTech” noted that there is a big difference in the power consumption of the S21 Ultra and S20 Ultra displays. In addition to S21 Ultra’s support for variable refresh rate, S21 Ultra also uses a new generation of OLED light-emitting bodies, which are more energy efficient The generation is better.
Citation source: SamMobile, AnandTech
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