Stefan Mileschin

Intel has officially launched the next wave of Optane SSDs, continuing a gradual rollout of higher density drives as their production of 3D XPoint memory catches up with demand. Intel's flagship consumer SSD family is still split between the Optane SSD 900P and 905P, with the more recent 905P filling out the higher capacities while bringing modestly improved performance and power efficiency. This week's releases are the 1.5TB 905P add-in card and 960GB and 1.5TB 905P U.2 drives, bringing the consumer lineup and the enterprise P4800X line both up to the same maximum capacity.

The larger capacity options don't bring any more performance improvements because they are still using the same controller, and even the smallest 280GB 900P had enough 3D XPoint dies to keep every channel of the controller busy. The bigger drives do have higher power consumption, with the 1.5TB 905P add-in card rated for up to 17.7 W for write operations.

We have probably reached the end of the line for capacity increases while Intel is still using first-generation 3D XPoint memory for their consumer Optane products, because Intel is still charging well over $1/GB and that means even the 1.5TB 905P will cost more than a well-equipped gaming PC. However, interesting things are happening at the lower capacities.
https://www.anandtech.com/show/13387...5-ssds-to-15tb