> vacuum channel is even better - 460GHz with existing technology Interesting. How exactly does this compare? Does anyone know roughly what the switching speed

> vacuum channel is even better - 460GHz with existing technology Interesting. How exactly does this compare? Does anyone know roughly what the switching speed of a finFET is in a leading CPU of today? I always presumed it to be significantly faster than the cycle speed which is dependent on total propagation of the longest path. Since that path tends to include a series of many switches surely the individual switching speed is significantly faster... [edit] Found it, indirectly, lower in the parent's article link: > In early testing, a vacuum-channel transistor was able to operate at 460GHz — on the order of 10 times faster than a conventional, silicon-based FET (and comparable to the speeds that a graphene transistor might operate at). Although higher in the article they incorrectly suggest FETs are only capable of a few GHz (probably confusing CPU clock frequency for switching frequency) along with other serious confusion: > There’s no word on whether these vacuum-channel transistors will allow for the creation of small, modern audio amplifiers that sound like original tube amps — but maybe!