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Ask HN: Why hasn't x86 caught up with Apple M series?

447 points stephenheron | 1 comments | 25 Aug 25 21:50 UTC | HN request time: 0.216s | source

Hi,

My daily workhorse is a M1 Pro that I purchased on release date, It has been one of the best tech purchases I have made, even now it really deals with anything I throw at it. My daily work load is regularly having a Android emulator, iOS simulator and a number of Dockers containers running simultaneously and I never hear the fans, battery life has taken a bit of a hit but it is still very respectable.

I wanted a new personal laptop, and I was debating between a MacBook Air or going for a Framework 13 with Linux. I wanted to lean into learning something new so went with the Framework and I must admit I am regretting it a bit.

The M1 was released back in 2020 and I bought the Ryzen AI 340 which is one of the newest 2025 chips from AMD, so AMD has 5 years of extra development and I had expected them to get close to the M1 in terms of battery efficiency and thermals.

The Ryzen is using a TSMC N4P process compared to the older N5 process, I managed to find a TSMC press release showing the performance/efficiency gains from the newer process: “When compared to N5, N4P offers users a reported +11% performance boost or a 22% reduction in power consumption. Beyond that, N4P can offer users a 6% increase in transistor density over N5”

I am sorely disappointed, using the Framework feels like using an older Intel based Mac. If I open too many tabs in Chrome I can feel the bottom of the laptop getting hot, open a YouTube video and the fans will often spin up.

Why haven’t AMD/Intel been able to catch up? Is x86 just not able to keep up with the ARM architecture? When can we expect a x86 laptop chip to match the M1 in efficiency/thermals?!

To be fair I haven’t tried Windows on the Framework yet it might be my Linux setup being inefficient.

Cheers, Stephen

1. asno3030 ◴[26 Aug 25 08:19 UTC] No.45023752[source]▶
They are pretty similar when comparing the latest amd, and Apple chips on the same node. The buying power from Apple means that they get them earlier than AMD, usually by 6-9 months.

Windows on the other hand is horribly optimized, not only for performance, but also for battery life. You see some better results from Linux, but again it takes a while for all of the optimizations to trickle down.

The tight optimization between the chip, operating system, and targeted compilation all come together to make a tightly integrated product. However comparing raw compute, and efficiency, the AMD products tend to match the capacity of any given node.