FRAM and MRAM have found a place in embedded markets doing weird things - MRAM is a low-cost alternative to space-grade flash right now, and both FRAM and MRAM

FRAM and MRAM have found a place in embedded markets doing weird things - MRAM is a low-cost alternative to space-grade flash right now, and both FRAM and MRAM are used for small, fast persistent "caching" with good wear-out. Optane was the only one of these products that was really targeted at the server space, and had much better density than FRAM, MRAM, PCM, and all the other weird alternatives.