28nm

We tend to discuss leading-edge nodes and the most advanced chips made using them, but there are thousands of chip designs developed years ago that are made using what are now mature process technologies that are still widely employed by the industry. On the execution side of matters, those chips still do their jobs as perfectly as the day the first chip was fabbed which is why product manufacturers keep building more and more using them. But on the manufacturing side of matters there's a hard bottleneck to further growth: all of the capacity for old nodes that will ever be built has been built – and they won't be building any more. As a result, TSMC has recently begun strongly encouraging its customers...