Samsung launched a new generation of flagship SSD hard drive 990 Pro series late last year, not on PCIe 5.0, but the performance is also the ceiling of PCIe 4.0, sequential read up to 7450MB / s, write speed of 6900MB / s.

The price is certainly not low, the domestic mainly provides 1TB, 2TB two configurations, the price is 1099 yuan and 2299 yuan, this price is more than 50% higher than other home products.

Purchase link. Jingdong(2299RMB)

However, recently the use of 990 Pro players may be very upset, because this SSD appeared & ldquo; life gate & rdquo; accident, but also a bit serious, because someone bought a 2TB capacity 990 Pro after the use of a few days, theHealth then plummeted, with SMART monitoring information showing a drop to 99%, then all the way down to 98%, 95%, and up to 94%.

This is obviously not normal, as many SSDs do not decline this much in health even after a year of use and writing a lot of data, and still maintain 99%.

For this situation, Samsung customer service gave a response that it is normal, really can not warranty, but the user received the SSD back from Samsung after-sales.Found nothing but formatting and still only 94% health.

Considering that there are other players who have also said that their 990 Pro also has plummeting health, the issue continues to fester and a statement from Samsung is expected to follow.

The flagship SSD is so unbearable, where is the problem? Samsung has not yet officially investigated, and can only guess at two possibilities, one is TLC flash memory, theThe 990 Pro uses Samsung's 176-layer TLC flash memory (officially called 3bit MLC)It should be a very mature product, and reliability should not be a problem.

There is also the possibility that the master990 Pro is upgraded with Samsung's own Pascal master control, there may have been a bug in the algorithm that caused the health to plummet.

For Samsung, since the last generation of 980 Pro, flash memory has also changed from MLC to TLC, and Samsung's flagship SSD was originally one of the only remaining benchmarks for MLC drives, but limited to cost, production capacity and other issues, MLC flash memory is also gone, TLC has become the mainstay, and QLC is all the rage.