IBM doubles its 14nm EDRAM density, adds hundreds of megabytes of cache
I wonder if it will ever see a chance to go mainstream.The memory bottleneck is pretty much the only thing in CPU design that didn't see a dramatic improvement over the years. Its elimination is the only obvious improvement pathway still left with expectation of double digit performance gains.So we need either very big and very fast caches, or extremely wide and low latency memory. Both options are quite costly.Adding on die DRAM that can work at least as fast as 500mhz will surely require some specialty process with a lot of compromises like the one in the article.Gluing something like HBM2 to the die for a second option moves the cost from the specialty process to the specialty packaging. Not much better.