Currently, performance is hypothetical. This and DRAM both work by charging up a little capacitor; this tech uses tunnelling so that the capacitor can be very

Currently, performance is hypothetical. This and DRAM both work by charging up a little capacitor; this tech uses tunnelling so that the capacitor can be very highly isolated. That's why it doesn't discharge. The smaller the capacitor, the faster it can charge/discharge. This tech has only been tested at sizes ~1000x large than the state of the art, and the speed advantage assumes it scales perfectly with the scaling laws. Reality is never that kind, but it might be mostly that kind. It's still theoretical, though. There might be some manufacturing quirk that makes it not work as well at small sizes. Defects that don't matter now might be huge at that scale. If power requirements creep up, they may kill longevity, which may require them to sacrifice speed... everything has to go right, or it can become a balancing act. Assuming everything goes great, it's still somewhat more complex than DRAM- more layers. It will certainly cost more than conventional RAM, but with ICs in particular it's very hard to know if that will be 10x more or .1% more.