I'm reading the latest SSDs do 14 GB/s of sequential reading and/or 15 million IOPS; transfer speed wise that's close to the highest end DDR3 (2007) and the low

I'm reading the latest SSDs do 14 GB/s of sequential reading and/or 15 million IOPS; transfer speed wise that's close to the highest end DDR3 (2007) and the lowest end DDR4 (2014). SSDs are definitely not memory speed fast yet (definitely not for random access) but definitely getting closer.