alt Hacker NewsThe biggest reason to do this is because TSMC's N2 node and future nodes will be dominated by AI chips. Since AI chips have far bigger margins than most Apple chips, Apple will get outbid by companies like Nvidia, AMD, and Broadcom. Nvidia already became TSMC's biggest customer last year. Every TSMC advanced node from N5 to N2 is fully booked and running at max capacity.
It's not really realistic to make Mac, Watch, iPad chips on TSMC's best node in the next 3-4 years - assuming there is no collapse in AI. Unfortunately, this might mean we will get inferior Intel chips for our Macs. Intel nodes, as it stands, are far more power hungry, less dense, and lower yielding. Intel's own Panther Lake CPU tile is on 18A and it's extremely disappointing in terms of perf/watt and raw perf.
I still expect iPhone chips to be made on the best TSMC nodes though. I'm assuming Apple will design every future core for both TSMC and Intel, sort of like how they dual sourced with TSMC and Samsung in the past for the same generation.
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Nvidia’s chips aren’t usually on the latest nodes. The M5 is in N3P, Blackwell is N4P. M6 is expected to be on an N2 node while Rubin is N3P.
I don’t think Nvidia even has an N2 chip announced, could be wrong through.
Apple arguably are making AI workstations that can do inference and training by their Mac Studio and Macbook Pros to a lesser extent. The M6 generation is going to be interesting and before the memory pricing going up their products were competitive to the rest of the industry. Intel is still working with small and smaller process nodes.
> TSMC's N2 node and future nodes will be dominated by AI chips.
Apple was reported to have locked up half of the initial year's 2nm production, which is lower than their share of 3nm, but hardly a sign of being squeezed out of the market
Panther Lake's efficiency doesn't match M5, but it seems to be very good by all accounts. "Extremely disappointing" is a misrepresentation.
I find it ironic that Apple did the whole silicon thing to get away from Intel and now they are reportedly crawling back to Intel? I hope M6 and beyond continue to be competitive for inference.
I do not know on what data you base your sentence "Intel's own Panther Lake CPU tile is on 18A and it's extremely disappointing in terms of perf/watt and raw perf."
Panther Lake does not have great raw performance, because for now Intel has not succeeded to obtain in their new 18A CMOS process clock frequencies as high as they get in the older TSMC 3-nm process used for their previous Arrow Lake H CPU generation and the CPU cores of Panther Lake have only minor changes that can affect performance in comparison with Arrow Lake/Lunar Lake.
On the other hand, from the published reviews that I have seen, Panther Lake has significantly better performance per watt than Arrow Lake H, which can be attributed only to the Intel 18A process when compared with the TSMC 3 nm process.
The energy efficiency i.e. performance per watt ratio of CPUs is mainly determined by the fabrication process and not by the CPU design, as long as the CPU designers are competent enough (unlike the single-thread performance, which is determined mainly by the CPU design).
So there is no doubt that Apple CPUs made with the Intel 18A process will have better performance per watt than those made with a TSMC 3-nm process. Moreover, because Apple CPUs can reach a given level of performance at lower clock frequencies, they should be much less affected by the lower clock frequencies attainable with Intel 18A than the Intel CPUs.
We also do not know whether Apple intends to use the Intel 18A process (currently used for Panther Lake laptop CPUs and Clearwater Forest server CPUs), or only its successor, Intel 14A.