Comment by logicallee
10 hours ago
Why are chips still built in only a few layers?
Even modern silicon only has some 60 of them right?
Plus don't transformers work in layers, making it natural to put a bunch of layers on top of each other? Regarding cooling, couldn't there be liquid cooling through a plumbing network in the same die?
Our brain takes quite a large volume, and we want chips that have a similar level of parts count (achieved - 80 billion neurons) and interconnectedness (not yet, around 10k synapses per neuron). Why do it in 80 2D layers? Is there no way to etch silicon in 3D?
Cooling by pumping water through silicon is an interesting idea. You should invent that.
Thanks for the encouragement, but this has already been invented. Microsoft announced it in September 2025 here:
https://news.microsoft.com/source/features/innovation/microf...
(The article date is included in the source code and referenced elsewhere on the Internet at that time.)