Question about 980 Pro - 378919

Hi Digitec, Samsung is misleadingly advertising its memory technology as "Samsung V-NAND 3-bit MLC". A 3-bit cell is a TLC (Tripple Level Cell) memory [for 2-bit=MLC (Multi Level Cell), for 1-bit=SLC (Single Level Cell)]. What Samsung is doing here is redefining the term MLC by no longer equating "multi" with 2-bit, but using it in such a way that everything that has more than 1-bit has multiple (several) bits. According to Samsung's own logic, QLC should also be called MLC, but this is obviously not the case. Because the performance of TLC memory is much lower than MLC, Samsung, like all other manufacturers, has to use a pseudo SLC cache despite the "Samsung V-NAND 3-bit MLC" technology. This cache can be over 100GB in size for a 1TB SSD; but when it is full, there is a "degrade" and the performance drops sharply. (this is known from QLC drives, where this effect is even more drastic). With SSDs with real(!) 2-bit MLC, this trick was not necessary. Unfortunately, MLC memory is practically no longer manufactured because TLC is just cheaper. Links: https://www.anandtech.com/show/16087/the-samsung-980-pro-pcie-4-ssd-review https://www.anandtech.com/show/13761/the-samsung-970-evo-plus-ssd-review https://www.anandtech.com/show/12670/the-samsung-970-evo-ssd-review The search filter "MLC" is therefore misleading for Samsung SSDs (970/EVO/PLUS/PRO, 980/Pro). As a customer, you get the impression that Samsung uses a fundamentally different technology than the competition. Despite exorbitant claims such as a write rate of 5000MB/s, only the drives from 1TB are actually able to maintain a constant write rate of 1000MB/s (1GB/s) when transferring large amounts of data (e.g. over a 10Gb/s network). For comparison, with MLC, even 256GB drives can do this easily. TLC is so slow that it really needs many chips that the SSD controller can write to at the same time to achieve comparable performance.