Advantages of LPDDR5 With UFS3.0 on Mi 10 Pro vs Mi 9
Xiaomi Mi 10 series phones is about to release. Xiaomi todat stated that the 2020 Android high-end flagship will be equipped with Snapdragon 865 + LPDDR5 + UFS3.0 is indispensable. In this regard, the official Xiaomi mobile phone also popularized the advantages of LPDDR5 with UFS3.0 today.
Xiaomi mobile phone official said that LPDDR5 memory has greatly increased the speed while reducing power consumption: thanks to the multi-bank group mode, LPDDR5 devices have added more parallel data paths, increased data bandwidth, and improved performance. Compared with the previous generation LPDDR4, the data transmission rate of LPDDR5 doubled, jumping from 3200Mbps to 5500Mbps.
In addition, Xiaomi mobile phone official said that Xiaomi Mi 10 has a significant improvement in memory performance of about 30%, and in the future there will be 6400Mbps LPDDR5 memory with higher specifications.
The official emphasizes that the power consumption of Xiaomi 10 is also lower: Compared to LPDDR4X, the VDD2 power supply of LPDDR5 is divided into VDD2H and VDD2L, of which VDD2H is reduced from 1.1V to 1.05V, and VDDQ is reduced from 0.6V to 0.5V. Newly added DFSSC and DVFSQ functions, dynamically adjusting the working voltage based on the operating frequency, and switching to VDD2H and VDDQ to lower 0.9V (VDD2L) and 0.3V voltages at low speeds to further reduce power consumption.
LPDDR4x devices need to maintain a 2133MHz clock frequency at high speeds, which will increase power consumption virtually. The LPDDR5 clock frequency is 800MHz. When data is read or written, the maximum operating frequency is reached by the WCK signal. When the read / write operation is stopped, the WCK signal is also stopped, thereby reducing power consumption.
The Xiaomi mobile phone officially claims that the LPDDR5 memory speed of the Mi 10 is 5500Mbps, which is equivalent to transmitting 44GB of data per second, which is about 12 high-definition video files (3.7GB / one). Memory is essential to the stable operation of mobile phones. High-performance memory is extremely beneficial to the overall smoothness of mobile phones.
Officially, taking pictures with mobile phones as an example, under the existing conditions, if the phone’s memory performance is low, it will lead to slow data transmission, which will cause delays in taking pictures and affect the experience.
In 5G cloud games, AI computing and other scenarios, Xiaomi officially stated that LPDDR5 high-performance memory can effectively reduce cloud game latency and ensure real-time synchronization of AI computing data, preparing for the derivation and development of 5G related services.
LPDDR5 vs LPDDR4X battery life comparison:
- In the comprehensive scenario, user life is increased by about 10%.
- In the game (Glory of Kings) scene, power saving is about 20%.
- In WeChat voice and video scenarios, power saving is about 10%.
UFS 3.0 Flash:
In addition, Xiaomi mobile phones officially said that the Mi 10 series supports UFS 3.0 flash memory and supports dual-channel bidirectional reading and writing. The UFS 3.0 interface bandwidth is 2900MB / s, while UFS 2.1 is 1450MB / s. At the same time, the interface voltage of UFS 3.0 is also lower than UFS2.1. The VCC power supply for the flash memory particles has been reduced from 2.9V to 2.5V, and the VCCQ for the main control power supply has been reduced from 1.8V to 1.2V. The power consumption and heat generation of the device helps.
Actual measurement: The power consumption of sequential reads per GB / s of UFS3.0 is 60% lower than that of UFS2.1, and the power consumption of sequential writes per GB/s is 48% lower than UFS2.1.
UFS 3.0 measurement: copying 11GB files, only 23 seconds to choose different types of flash memory, and the capacity is 128GB Xiaomi mobile phones, using AndroBench (version 5.0.1) software.
Measured read and write performance. The following is the test data.
The measured data shows that Xiaomi 10 equipped with UFS 3.0 flash memory has improved the flash memory read and write performance compared to Xiaomi 9: sequential read speed is twice that of Xiaomi 9, sequential write speed is 3.9 times that of Xiaomi 9, random read The speed is 1.7 times that of Xiaomi 9, and the random writing speed is 1.7 times that of Xiaomi 9.
The comparison of UFS 3.0 and UFS 2.1 in three scenarios is as follows (Xiaomi Mi 10 Pro 256GB VS Xiaomi Mi 9 256GB):
Comparison of file copy speed (5x speed)
Copying a compressed file of 11.17GB in the phone, the Xiaomi Mi 10 Pro took 23 seconds and kept 500MB / s. The Xiaomi Mi 9 took about 60 seconds and the speed floated between 145MB / s and 335MB / s.
Game installation speed comparison (3x speed)
Install the game “Peace Elite”, the installation package size is 1.9GB, and the Xiaomi 10 Pro takes 12 seconds. Xiaomi Mi 9 took 19 seconds.
Game loading speed comparison
From clicking the “Peace Elite” icon to entering the game completely, Xiaomi Mi 10 Pro takes 18 seconds and Xiaomi Mi 9 takes 22 seconds.
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