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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: 0s | 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

Show context
blacksmith_tb ◴[25 Aug 25 23:27 UTC] No.45020465[source]▶
I considered getting a personal MBP (I have an M3 from work), but picked up a Framework 13 with the AMD 7 7840U. I have Pop!_OS on it, and while it isn't quite as impressive as the MBP, it is radically better than other Windows / Linux laptops I have used lately, battery life is quite good, ~5hr or so, not quite on par with the MBP but still good enough that I don't really have any complaints (and being able to up upgrade RAM / SSD / even mobo is worth some tradeoff to me, where my employers will just throw my MBP away in a few years).
replies(4): >>45020978 #>>45021113 #>>45022114 #>>45022791 #
bigmadshoe ◴[26 Aug 25 03:57 UTC] No.45022114[source]▶
5 hours seems a lot worse than the ~10 hours I get on my M4 Air.
replies(3): >>45022521 #>>45022670 #>>45027517 #
threatripper ◴[26 Aug 25 05:16 UTC] No.45022521[source]▶
I get like 3 hours on my MBP when I use it. MacBooks have better runtime only when they are mostly idle, not when you fully load them.
replies(2): >>45022602 #>>45022726 #
1. koiueo ◴[26 Aug 25 05:50 UTC] No.45022726[source]▶
I concur.

The only portable M device I heavily used on the go was my iPad Pro.

That thing could survive for over a week if not or lightly used. But as soon as you open Lightroom to process photos, the battery would melt away in an hour or two.