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 1 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 soaked up more quickly. The cache is sized at 140 GB, once it is full, writes complete at 185 MB/s. The 665p is rated for sequential read speeds of up to 2,000 MB/s and 1,925 MB/s write; random IOPS reach up to 160K for reads and 250K for writes.
At its launch, the SSD was priced at 125 USD. The warranty length is set to five years, which is an excellent warranty period. Intel guarantees an endurance rating of 300 TBW, a relatively low value compared to other SSDs.