MRAM doesn't have an unlimited endurance. At most, the STT MRAM will give you 10^15 guaranteed writes before the junction starts to fail repeatedly. This is th

MRAM doesn't have an unlimited endurance. At most, the STT MRAM will give you 10^15 guaranteed writes before the junction starts to fail repeatedly. This is though, way, way better than flash. To get to DRAM level it needs 10^17, or ideally 10^18, so it can be used as cache. It is also not the most power efficient memory, but still way better than any DRAM. SOT MRAT promises more performance, and endurance, and VCMA promises more power efficiency, and logic compatibility.