To introduce one of his new smartphones in Asia, one of Redmi's executives hinted at future products. For the first time, the direct use of new RAM in the mobile phone was limited in time. It will be used in the first quarter of 2020.
Lu Weibing of Redmi made via the big Chinese portal Weibo very clear statements in this direction. Thus, in 2020, a flagship will no longer rely on the DDR4 standard, but use the next generation of memory aka DDR5. More specifically, it is the respective special low-power offshoots that are currently in use, LPDDR4 is ultimately replaced by LPDDR5.
The schedule should turn out to be quite appropriate. Already a few months ago, the major memory manufacturers announce that they are focusing on new technologies to find their way out of the low prices of DRAM memory chips. It also always LPDDR5 is next to HBM2 and other products mentioned by Rand, which was adopted in the form of LPDDR5 already in early 2019 as an official solution by the JEDEC.
LPDDR5 brings several advantages over LPDDR4 (X)
The major innovation of LPDDR5 over LPDDR4 is the re-raised I / O data rate, which is a maximum of 6,400 Mbps per pin on LPDDR5. LPDDR4 was initially started at half, so 3,200 Mbit / s, but offered in the course of time up to 4,266 Mbit / s. Meant is the gross data rate, the net usable data transfer rate is due to the overhead below.
LPDDR5 supports 16 memory banks per channel, which is twice as high as the 8 banks in LPDDR4. This as well as the differential signal transmission of the “multi-clocking architecture” contributes to the increase in performance. The so-called WCK Clock can provide twice or even four times the data rate of the internal command interface, which ensures a significant performance boost. In addition, a Deep Sleep Mode (DSM) to save power, Samsung had up to 30 percent lower power than LPDDR4 in view. Optionally, Link ECC provides additional error correction for use in the automotive industry.
Samsung is also considered one of the pioneers in the field, as early as mid-2018, the first design for LPDDR5 was completed. After one and a half years, a mass market launch in early 2020 would ultimately be easy to implement, especially since a few months ago they announced that they would mass-produce the LPDDR5-5500 as an initial design with 8 or 12 GB capacity. Of that, however, not only Redmi will make use in the end, also various other manufacturers will bet on LPDDR5 from 2020. This, of course, is first and foremost Samsung, the Exynos 990 supports the new standard and will presumably celebrate its premiere in the final product Galaxy S11 at MWC 2020.