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I think chances are pretty good if the density of MRAM can match the density of other memory systems, and thus lower cost to a competitive level. There is a significant amount of research into MRAM, and that has been true for a number of years. Even DARPA has been pushing R&D of MRAM, so clearly some very intelligent and forward thinking people thing that MRAM has tremendous potential. I don't know all that much about MRAM, but the manner of storage is really interesting. Instead of using electrical charges like DRAM, it stores data bits using magnetic charges. The benefits of this storage method are numerous. As one would expect, it uses much less power. It also adds stability, allowing RAM to act more like a HDD in that one the data is stored, it remains even if power is lost. This could allow machines to start immediately, eliminating the need for software to boot up. I think there is actually a chance that MRAM could become "universal memory", but adoption of new technology is never a certainty.