Intel Announces SSD DC P4501 Low-Power NVMe SSD With 3D NAND
 

A month ago, Intel unveiled a new generation of enterprise SSDs based on their 3D TLC NAND and powered by a new generation of Intel NVMe SSD controllers. Intel's first NVMe controller—introduced with the SSD DC P3700—had a great run, but it's been showing its age for a while now. The new controller used on the P4500 and P4600 enables higher performance despite the new drives using 3D TLC NAND compared to the P3700's 20nm planar MLC, and despite the newer controller having only 12 flash channels instead of 18.

http://www.anandtech.com/show/11514/...d-with-3d-nand