<Tr> <Td> <Ul> <Li> Optical disc </Li> </Ul> </Td> </Tr> <Ul> <Li> Optical disc </Li> </Ul> <Tr> <Th> In development </Th> </Tr> <Tr> <Td> <Ul> <Li> CBRAM </Li> <Li> Racetrack memory </Li> <Li> NRAM </Li> <Li> Millipede memory </Li> <Li> FJG RAM </Li> </Ul> </Td> </Tr>

What is the memory called that is faster than ram