Cerebras Systems unveils a 1.2T transistor chip for AI

Re:Cerebras Systems unveils a 1.2T transistor chip for AI by sp332 on Monday August 19, 2019 @02:21PM (#20740272)

There's a photo on the homepage: https://www.cerebras.net/ It's just about 8.5" across. You could just barely print a 1:1 photo of it on a letter-sized sheet of paper, with less than a half-milimeter margin on each side.

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Re:Cerebras Systems unveils a 1.2T transistor chip for AI by ohazi on Monday August 19, 2019 @03:17PM (#20740866)

I wonder if they bond it to a copper slab. At that scale, the tiniest amount of PCB flex would probably shatter the die/wafer...

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Re:Cerebras Systems unveils a 1.2T transistor chip for AI by oITAZt on Monday August 19, 2019 @07:34PM (#20742673)

They do not. They have "developed [a] custom connector to connect wafer to PCB": https://imgur.com/a/sXxGbiD

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Re:Cerebras Systems unveils a 1.2T transistor chip for AI by ohazi on Monday August 19, 2019 @09:23PM (#20743114)

I think "cold plate" is the slab.

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Re:Cerebras Systems unveils a 1.2T transistor chip for AI by oITAZt on Tuesday August 20, 2019 @03:01AM (#20744447)

Yes, I it is probably a copper slab (they never mentioned), but there is no electrical connection, as the rest of the slides make clear: https://imgur.com/a/Rbd7e4D

It just provides a thermal connection for water cooling. The electrical connection is made through the PCB (and probably through a thick copper plate on the opposite side of the PCB)

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