"The technology is called phase-change memory, or PCM, which is seen as an alternative to flash. Flash has proved popular for use in mobile devices but is considered to have limitations, such as in high-end business infrastructure. IBM on Thursday said it has developed a PCM chip that effectively can double a device's memory capacity--in comparison to other PCM chips--while maintaining a low error rate. PCM chips can experience problems the longer the data are stored..."
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