The Samsung 860 EVO was a solid-state drive in the 2.5" form factor, launched on January 23rd, 2018, that is no longer in production. It was available in capacities ranging from 250 GB to 4 TB. This page reports specifications for the 250 GB variant. With the rest of the system, the Samsung 860 EVO interfaces using a SATA 6 Gbps connection. The SSD controller is the MJX Maru (S4LR030) from Samsung, a DRAM cache chip is available. Samsung has installed 64-layer TLC NAND flash on the 860 EVO, the flash chips are made by Samsung. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are handled more quickly. The cache is sized at 12 GB, once it is full, writes complete at 300 MB/s. The 860 EVO is rated for sequential read speeds of up to 550 MB/s and 520 MB/s write; random IO reaches 98K IOPS for read and 90K for writes.
At its launch, the SSD was priced at 95 USD. The warranty length is set to five years, which is an excellent warranty period. Samsung guarantees an endurance rating of 150 TBW, a typical value for consumer SSDs.