The real problem though is latency - RAM is extremely low latency and that is one of its primary benefits. I can't say for sure what this new tech has but readi

The real problem though is latency - RAM is extremely low latency and that is one of its primary benefits. I can't say for sure what this new tech has but reading about Intel Optane (which is already much lower latency than normal SSD) it seems to have a latency of approximately 1-10us. DDR4 is something like 50ns. Pretty large disparity (my numbers could be off - this was just after some quick searches)