The PNY CS900 is a solid-state drive in the 2.5" form factor, launched on March 12th, 2018. It is available in capacities ranging from 4 TB to 8 TB. This page reports specifications for the 8 TB variant. With the rest of the system, the PNY CS900 interfaces using a SATA 6 Gbps connection. The SSD controller is the PS3111-S11-13 from Phison, a DRAM cache is not available. PNY has installed 64-layer QLC NAND flash on the CS900, the flash chips are made by Micron. Please note that this SSD is sold in multiple variants with different NAND flash or controller, which could affect performance, the "Notes" section at the end of this page has more info. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. The CS900 is rated for sequential read speeds of up to 560 MB/s and 540 MB/s write.
At its launch, the SSD was priced at 950 USD. The warranty length is set to three years, which is above average, but shorter than the five years offered by many other vendors. PNY guarantees an endurance rating of 5695 TBW, a good value.