https://wccftech.com/western-digital-wd-black-sn770-nvme-ssds/

Western Digital announces the newest addition to their WD_BLACK portfolio, the WD BLACK SN770 NVMe SSD. In contrast, games offer robust and immensely more significant worlds for next-gen gamers, the demand for optimization, and higher storage levels for added downloadable content and updates.

The new WD BLACK SN770 NVMe SSD gives users improved performance and power efficiency by offering a maximum speed increase of 40% on routine and 20% on power efficiency compared to previous generations by the company.