SK Hynix and Toshiba showed a working 4-Gbit STT-MRAM delivering image quality as good as a system with an 8-Gbit DRAM. Kwang Myoung Rho, a principal engineer at SK, said that he has been working on the project for five years, but it’s still a ways from being commercially viable.
In addition to being a generation or two in density behind DRAM, the MRAM part is two to three times the cost of DRAM. That’s too high a premium for its non-volatility, he said.
He plans to keep working on the reliability and retention of the underlying cells. Meanwhile, he expressed admiration for Everspin finding commercial uses in embedded chips for similar technology.
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