eMMC 5.1, on the other hand, is a widely adopted storage standard for mobile devices, offering a reliable and cost-effective solution for storing data. It uses a single-lane interface, with a maximum theoretical speed of up to 600 MB/s. While not as fast as UFS 22, eMMC 5.1 still provides adequate performance for everyday tasks like browsing, social media, and streaming.
While real-world performance depends on the controller and NAND type, the theoretical specifications paint a clear picture. ufs 22 vs emmc 51 link