Earlier quoted context omitted.
It seems like they plan to shift to novel hybrid architectures, at least if things like Intel owning Altera mean anything. I'd expect them to be doing things like putting neural network accelerators down and the like. Or everyone has to make a dramatic leap to a new underlying computing physics, like the quantum dot transistor or the vacuum transistor [1] that lets them increase frequency or lower power consumption.…
A big problem with increasing the clock speed is that your processor still needs to wait for the DRAM to respond. Modern processors are crazy smart about prefetching, caching, and running instructions in parallel, but at some point Memory bandwidth and latency begin to dominate over CPU clock speed. Many players have started looking at puting multiple dies on the same substrate with high-speed interconnects to reduce…
I'd kind of figure that such a technology would also speed up the RAM, but I suppose that's not true either if the underlying storage technology is too slow. But I know that's also an area of active research.