The Intel 665p was a solid-state drive in the M.2 2280 form factor, launched on November 25th, 2019, that is no longer in production. It was available in capacities ranging from 1 TB to 2 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the Intel 665p interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the SM2263EN from Silicon Motion, a DRAM cache chip is available. Intel has installed 96-layer QLC NAND flash on the 665p, the flash chips are made by Intel. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are handled more quickly. The cache is sized at 280 GB, once it is full, writes complete at 370 MB/s. The 665p is rated for sequential read speeds of up to 2,000 MB/s and 2,000 MB/s write; random IO reaches 250K IOPS for read and 250K for writes.
The SSD's price at launch is unknown. The warranty length is set to five years, which is an excellent warranty period. Intel guarantees an endurance rating of 600 TBW, a relatively low value compared to other SSDs.