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447 points stephenheron | 2 comments | | HN request time: 0.43s | 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

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dmitrygr ◴[] No.45020364[source]
There is one positive to all of this. Finally, we can stop listening to people who keep saying that Apple Silicon is ahead of everyone else because they have access to better process. There are now chips on better processes than M1 that still deliver much worse performance per watt.
replies(3): >>45020497 #>>45020649 #>>45023461 #
bigyabai ◴[] No.45020649[source]
Not sure why you'd think that, comparing a heterogeneous core architecture to a homogeneous one. Mobile Ryzen chips aren't designed for power efficiency, if you want a "fair" comparison then pull up a Big.little x86 chip or benchmark Apple's performance cores vs AMD's mobile chipsets.

Once you normalize for either efficiency cores or performance cores, you'll quickly realize that the node lead is the largest advantage Apple had. Those guys were right, the writing was on the wall in 2019.

replies(1): >>45021172 #
1. dmitrygr ◴[] No.45021172[source]
I guess that’s the new excuse. Except it doesn’t work. I can off-line all the efficiency cores on my M1 laptop and still run circles around the new x86 stuff in performance per watt.
replies(1): >>45021619 #
2. bigyabai ◴[] No.45021619[source]
Well don't just tell me about it, show me. Link the Geekbench results when its done running.