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It seems like they didn't mention about process node.

Maybe all of its tiles are based on TMSC as some news revealed months ago, so they didn't want to discuss about this?

Wikipedia is saying:

Compute tile - TSMC N3B

Platform Controller Tile - TSMC N6

Foveros Interposer Base Tile - Intel 22FFL

I like AnandTech's tag line (rip): Lunar Lake: Designed By Intel, Built By TSMC (& Assembled By Intel)

It works so well for other company: Designed in California, made in China.

> TSMC

so, intel officially lost fab race..

According to their own roadmap from a few years ago they should have been able to use their own 20A process node for this CPU.