The Crucial BX300 was a solid-state drive in the 2.5" form factor, launched in August 2017, that is no longer in production. It was available in capacities ranging from 120 GB to 480 GB. This page reports specifications for the 120 GB variant. With the rest of the system, the Crucial BX300 interfaces using a SATA 6 Gbps connection. The SSD controller is the SM2258H from Silicon Motion, a DRAM cache chip is available. Crucial has installed 32-layer MLC NAND flash on the BX300, the flash chips are made by Micron. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. The cache is sized at 4 GB. The BX300 is rated for sequential read speeds of up to 555 MB/s and 510 MB/s write; random IO reaches 45K IOPS for read and 90K for writes.
At its launch, the SSD was priced at 60 USD. The warranty length is set to three years, which is above average, but shorter than the five years offered by many other vendors. Crucial guarantees an endurance rating of 55 TBW, a typical value for consumer SSDs.