Whether you approve of it or not, QLC flash SSD has gradually become popular, but some old users still miss the high-performance, long-life SLC and MLC flash memory, so they carried out the "atavism" operation on the foreign gods, and transformed a QLC SSD into SLC, the effect is not bad, and the life has increased dramatically, but the disadvantage is that the capacity has become a quarter of the original.
It is understood that the god uses an Critical BX500, this 2.5-inch SATA SSD uses the main control of Huirong SM2259XT2 (and also used SM2258XT), with four Micron QLC flash memory, with a total capacity of 480GB, the original serial number of the flash memory NY240, which is very important, because not any QLC can carry out subsequent transformations.
For example, each storage unit of QLC can store 4 bit of data, while SLC can only store 1 bit of data, so the capacity will be reduced to one quarter of the original when it becomes "SLC". They used the MPTools mass production tool, which is a software, to change the flash serial number, flash in the new firmware, and finally get an SLC SSD.
Since the bandwidth of the SATA3 interface is only 6G, the transformed SSD does not have obvious advantages in SLC performance, but the read and write performance has basically not changed, and the maximum is still about 500MB/s, but the latency and access time have been significantly improved. The most important thing is that the lifespan has reached a staggering 4000TBW, which is 30 times that before the transformation!
As for TLC, this "reverse" upgrade is theoretically supported, but no one would want to do that, since it's good enough.
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