The Addlink S70 was a solid-state drive in the M.2 2280 form factor, launched in 2019, that is no longer in production. It was available in capacities ranging from 256 GB to 2 TB. This page reports specifications for the 256 GB variant. With the rest of the system, the Addlink S70 interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the PS5012-E12-27 from Phison, a DRAM cache chip is available. Addlink has installed 64-layer TLC NAND flash on the S70, the flash chips are made by Toshiba. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. The S70 is rated for sequential read speeds of up to 3,000 MB/s and 1,000 MB/s write; random IO reaches 95K IOPS for read and 94K for writes.
At its launch, the SSD was priced at 48 USD. The warranty length is set to five years, which is an excellent warranty period. Addlink guarantees an endurance rating of 400 TBW, a good value.