Diamond Foundry announces the first 200 mm single-crystal diamond wafer
The company says the D200 is the largest size of its kind, offered as a possible cooling material for AI chips.
A company made a thin slice of diamond 20 centimetres across. Diamond moves heat well, so it might help cool powerful computer chips one day, but it is not in shops.
Hype check
Louder than it deserves. The real change is smaller.
Our editorial opinion, based on the sources below. How we score
Your call: hype or real?
Real = it will matter in daily use. Hype = louder than it is. One vote, and it can’t be changed.
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Why it matters
Powerful chips run hot and diamond conducts heat well, so it could ease cooling if large-scale production becomes possible.
Watch: a nice idea, far from something you can buy.
The details
- Diamond Foundry says on its site it made the first 200 mm single-crystal diamond wafer, the D200, following the D100.
- The company posted an article on 5 November 2026 titled “D200mm: A New Scale for Single-Crystal Diamond”.
- Tom’s Hardware describes the wafer as a possible cooling material for semiconductors and AI chips.
- We found no further dimensions, prices or product dates, and the “first” claim comes from the company itself.
Receipts
One trusted outlet reports it. Not confirmed yet. Open the sources and check us.
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