
Currently, NAND flash memory products, such as SSD, has been able to write data to achieve 2Gbit/sec.
IBM says they have produced a phase change memory (PCM) chips that can store two bits of data per cell without any corrupt data problem, something that has plagued the initial development of PCM.
As NAND flash memory, used in solid state drives (SSDs) and embedded in a computer like the Apple MacBook Air, PCM nonvolatile - meaning it retains data after power supply is turned off.
Pozidis said that during the last five months, a team of IBM scientists have tested the multi-level cell (MLC) chip capable of storing two and finally three bits of data, showing that he can reach the level of reliability suitable for practical applications....