NikKTech reviewed the Crucial P5 1TB and 2TB M.2 NVMe SSD
A quote from the article:
The P5 M.2 NVMe SSDs by Crucial is their first consumer line to feature their very own NAND flash controller and today I'll be testing both the 1TB and 2TB model capacities.Crucial P5 1TB and 2TB M.2 NVMe SSD Review