Your computer wouldn’t be very useful without RAM, which is short for random access memory. These chips function as the temporary storage for an operating system, and speed is of great importance, as they’re constantly needing to access bits of memory to keep everything running smoothly. For more than two decades, the most advanced version of this technology—magnetoresistive RAM, or MRAM—has been the go-to tech for the kind of intense computing necessary in industrial, military, and space applications.