TSMC doesn&#x27;t have a 22nm process -- they offer a 20nm process instead, but it was heavily delayed, had huge yield issues, and most of its production capability was double-booked with Apple, all of which meant it wasn&#x27;t feasible to use in time for Nvidia&#x27;s previous generation (Maxwell) launch.<p>Maxwell had been planned as 20nm, but when TSMC couldn&#x27;t solve their process issues the first Maxwell was taped out at 28nm (GM107 aka the GeForce 750), while they waited on the rest of lineup. 6 months later, with TSMC still having issues at 20nm, the GM204(GeForce 980&#x2F;970) was launched at 28nm.<p>16nm FinFET wasn&#x27;t subject to massive delays (it launched early, in fact), and seems to have better yields than 20nm early on, so Pascal skipped right down to it.