Ps5 131gb Ram

[Pemalite]

Memristers has been a long time coming, in-fact I had almost forgotten about it since it was first announced many many eons ago.

JEMC said:

No, I haven't used a computer with a RAM drive. But I loved your analogy!

 

As for NAND evolution, let me start saying that I don't know much about it, but if I'm not wrong they are already producing it at 20nm and with the troubles everybody (even Intel) are having to go below that point, I don't see them going beyond 14nm once next gen launches. Also NAND is still not as fast as RAM, so they still have work to do on that front.

And on top of that, even though TLC NAND is here and cheap enough, its lifespan is also lower than "regular" NAND and that is something of concern if you plan to go into smaller nodes, which will shorten its life even more, and try to use it also as RAM memory, which will dramatically increase its write-read operations shortening again its lifespan.

I'm afraid there's still a lot of work until we reach that point, even less when its affordable enough to use it on consoles.

NAND is already in 14nm-16nm range, with Samsung, Hynix etc' leading the charge.
They may need to start using more expensive quad-patterning to go lower than 14nm.
There is also the option of 3D and Stacked NAND at those nodes.

Flash life span is directly associated with size and the number of writes.
The larger the capacity, the better the wear-levelling can work and the longer the drive lasts, one has to assume next generation we will be pushing past 50Gb games, so multi-terabytes will probably be required.
However, the smaller we shrink NAND the less cycles every cell can perform, it's also dependent on how mature a given node is, today's 20nm is far more reliable than it was when it was first introduced.

Keep in mind that NAND/Flash/DRAM is a 70+ Billion dollar market, there is TON of financial incentive for companies to be innovative.

In-fact RAM has a similar issue, the higher the density a DRAM chip is, the more prone to errors it becomes, hence why error checking is going to become increasingly important as time goes on.