OnePlus 7 series adopts UFS 3.0: two ways to understand ROM read-write speed
By Zim Yang 2019-05-17 1463 0
Although there is also a software optimization, it also reflects the great advantages of UFS 3.0 in terms of reading and writing. There may be many readers not very understanding of this aspect, today we will take you from the two aspects of a simple read flash read speed.
Different flash specifications are defined
How to test the mobile phone reading and writing speed, how to judge the standard?
Mobile phone flash memory is the mobile phone ROM that we often say. Its size affects how many games we can download, and its speed of reading and writing affects how quickly we can install and open games.
At present, the main mobile phone flash specifications are generally eMMC and UFS 2.0.
EMMC (embedded multimedia memory card) is by definition the standard specification for embedded memory established by the MMC association for products such as mobile phones or tablets. UFS (universal flash memory storage) was proposed by JEDEC solid state technology association in 2011 and released by electronic equipment engineering joint committee in 2013. It is also an embedded memory standard specification.
The difference between the two is that eMMC is based on parallel data transfer technology, while UFS serial data transfer technology, the former can only perform the operation of reading or writing at a certain time, while the latter can perform the operation of reading and writing at the same time. In terms of transmission speed, UFS is also superior to eMMC, so it will be more expensive.
Simply put, the eMMC is a mechanical hard drive on a PC, and the UFS is a solid-state drive. From the numerical point of view, the current main eMMC5.1 sequential reading speed will not exceed 300MB/s, UFS 2.0 sequential reading speed is about 600MB/s, and UFS 2.1 sequential reading speed is about 800MB/s.
While UFS 3.0 introduces hs-g4 specification, single channel bandwidth is improved to 11.6Gbps, which is twice the performance of hs-g3 (UFS 2.1). This time OnePlus 7’s read and write performance has been improved with the UFS 3.0. From the perspective of the exposed Androbench, it mainly improves the performance of sequential reading and writing, so it has some advantages in large files.
In terms of the price difference between read and write performance, eMMC and UFS have drawn the line. At present, most of the $149 level phones adopt eMMC due to its cost, while high-end flagship adopts mainstream UFS 2.1.
Readers may also want to know the reading and writing performance of their mobile phones. We only need to download an Androbench software to test the sequential reading and writing performance of mobile phones and random reading and writing performance.
This software can be downloaded from various app stores. The first two items are our sequential reading and writing speed, and the last two are random reading and writing speed. Once you've figured out how fast your phone can read and write, you can compare it to the previous theoretical values.
Note that it is recommended to clear the background during testing, or switch the phone again before testing, so as not to affect the test results due to the full load of background tasks.
Now when you buy a mobile phone, you generally pay attention to the surface parameters. However, the internal parameters are often not very detailed. Users in need can test in the physical store or refer to various reviews before purchasing one.
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