this post was submitted on 20 Nov 2023
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TechPowerUp: "Intel Lunar Lake-MX SoC with On-Package LPDDR5X Memory Detailed" (www.techpowerup.com)
submitted 10 months ago by [email protected] to c/[email protected]
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[–] [email protected] 1 points 10 months ago (6 children)

My two best guesses for why TSMC N3B is used for the compute tile:

  1. The Compute Tile has the x86 Cores, NPU, and iGPU. Because of this, 20A couldn't be used. It could've been either Intel 3, N3B, or wait for 18A. N3B was likely the best choice

  2. ARL and LNL were developed in Tandem, one using internal foundries, the other external, as a post-10nm risk mitigation. Development for these CPUs likely began somewhere around 2020.

[–] [email protected] 1 points 10 months ago (1 children)

So there was a somewhat similar post a year ago where an intel engineer commented on why they are using tsmc. Essentially, and I’m really paraphrasing, tsmc was better at gpus because they were more efficient at wide architectures vs intel which is better at narrow/super high clock architectures. This was all before 18a though obviously.

[–] [email protected] 1 points 10 months ago

N3B is flat out better than anything Intel has in the same time frame. It's not like the GPU guided the decision.

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