Sabrent Rocket 4TB M.2 2280 NVMe PCIe 3.0 SSD Review
 

Again, we have noted that the usage of TLC NAND is beneficial versus drives which use QLC; not only the MTBF value is noticeably higher, but the sustained write rates do hover at about 1GB/s after the pseudo-SLC cache has been completely filed up, which is good to consider when writing large quantities of data to the drive from a single session.

http://www.madshrimps.be/articles/article/1001444/