Kingston had a little treat at their CES showcase this year. They had DDR4 and not only that they had a working DDR4 platform! They were showing off 384 GB of DDR4 memory running on a 2P future Intel server reference platform.
There are 24 16GB DDR4-2133 RDIMMs installed in the server. This was just to show you that their DDR4 is operational and works, we would have loved to see some benchmarks with that much memory!