MLC is gone forever Samsung 990 Pro has a “lifetime door” accident: TLC flash memory is to blame? –Fast technology–Technology changes the future

At the end of last year, Samsung launched a new generation of flagship SSD 990 Pro series, without PCIe 5.0, but the performance is also the ceiling of PCIe 4.0, with sequential reading up to 7450MB/s and writing speed of 6900MB/s.

Of course, the price will not be low. There are mainly two configurations of 1TB and 2TB in China, and the prices are 1099 yuan and 2299 yuan respectively. This price is more than 50% higher than other products.

Purchase link:Jingdong (2299 yuan)

However, players who have recently used 990 Pro may be very upset, because this SSD has a “life gate” accident, which is a bit serious, because after someone bought a 990 Pro with a capacity of 2TB, it was used for a few days.The health degree dropped sharply, and the SMART monitoring information showed that it fell to 99%, and then fell all the way to 98%, 95%, and finally 94%.

This is obviously abnormal, because the health of many SSDs will not decline so much after being used for a year and a large amount of data is written, and can still be maintained at 99%.

For this situation, Samsung customer service responded that it is normal, and if it is not possible, the warranty can be guaranteed, but the user received the SSD returned by Samsung after sales,It was found that nothing was done except formatting, and the health degree was still only 94%.

Considering that there are other players who also said that their 990 Pro’s health has also plummeted, this problem is still fermenting, and Samsung is expected to issue a statement later.

The flagship SSD is so unusable, what is the problem? Samsung has not yet made an official investigation, and there are only two possibilities that can be guessed, one is TLC flash memory,The 990 Pro uses Samsung’s 176-layer TLC flash memory (officially called 3bit MLC)It should be a very mature product, and there should be no problems with reliability.

Another possibility is the master control,990 Pro upgrades Samsung’s self-developed Pascal masterThere may be a bug in the algorithm, causing the health to plummet.

For Samsung, starting from the 980 Pro of the previous generation, the flash memory has also been replaced from MLC to TLC, and Samsung’s flagship SSD was originally one of the only benchmarks for MLC hard drives, but due to problems such as cost and production capacity, MLC flash memory has also gone. Never to return, TLC has become the mainstay, and QLC is even more popular.