How far can we push Moore’s Law? It’s starting to become a concerning question as processors push into almost infinitesimally small process nodes.

Intel’s 14-nanometer Broadwell chips suffered from lengthy delays, stuttering Intel’s vaunted tick-tock manufacturing schedule. TSMC, the company that manufactures graphics processors for AMD and Nvidia, has been stuck at the 28nm node for years now. Intel plans to push into 10nm in 2017, but IBM’s looking beyond that, and just revealed the world’s first working 7nm processor—but it took some pretty exotic manufacturing to get there.

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