It allows manufacturers to build $199 laptops and $99 tablets that are completely usable for basic tasks. If you are comparing two budget devices and one has eMMC 5.1 and the other has a SATA SSD,
emmc-5-1-storage-explained
For years, tech reviewers have told you that eMMC stands for "e-xtremely Mediocre Memory" or that it is a hard drive pretending to be an SSD. While that was true for older versions (eMMC 4.5), the industry standard has shifted to . emmc 5.1 storage
eMMC 5.1: Why Your Budget Laptop Isn’t as Slow as You Think (And When to Avoid It) It allows manufacturers to build $199 laptops and