> 16 H200 GPU along with single digit TB HBM memory stitched together on a single substrate wafer
How on earth would you cool this?
How on earth would you cool this?
https://www.eetimes.com/powering-and-cooling-a-wafer-scale-d...
They use probably the fanciest piece of rubber (and metal) ever made to pass the power in frontside to the die.
But the power itself isn't too bad. A square millimeter of wire can comfortably carry 20 amps, and you can scale that up pretty straightforwardly.
It looks like each of those 84 rectangles has to deal with 240 amps and has multiple square centimeters of contact with the voltage regulator card above it.
https://en.wikipedia.org/wiki/Cray-2#/media/File:Cray2.jpg
Bring back toxic waterfalls.
With that much constant heat, what chemical might be best/most practical I wonder.
With liquid nitrogen. :-)