It's because of diamond's high heat conductivity. The AI chips run too hot for traditional copper heat sinks to keep them cool.

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[–] 15 points 2 months ago* (last edited 2 months ago) (5 children)

Following the links around

He noted that current cooling solutions do not replace copper entirely with diamond but mainly employ a "diamond + copper" combination, where diamond is responsible for frantically absorbing heat at the most critical localized hot spots, while copper continues to shoulder the burden of the main structure and signal transmission.

GPUs will fully adopt a solution combining diamond-copper composite thermal management and 45 C direct-to-chip liquid cooling.

Diamond Cooling: synthetic diamond material added as an extra layer in the thermal stack, intended to spread heat away from hotspots faster than conventional copper solutions,

Sounds like a diamond layer between the cpu and copper heatsink?

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  • [–] 1 point 2 months ago* (last edited 2 months ago)

    diamond copper? how? diamond burns into co² at around 800-900c and copper melting point is around 1000c, is this some corpo bait speak again for investors?

    edit : oh, they meant something like thermal paste or similar

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