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M2 fanless heat issue

Jack Neill said:
MacWorlds testing seems to indicate that the M2 preforms similar to the M1.

www.macworld.com

13-inch MacBook Pro M2 review: A powerful tweener in Apple's lineup

The 13-inch MacBook Pro M2 is a good laptop, but when you look at the other laptops in Apple's lineup, it's befuddling as to who it's actually for.
www.macworld.com www.macworld.com
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True but I think they’re discussing read/write speeds. MacWorld shows that the M1 is indeed about 76% faster than M2 in R/W speeds. CPU they are similar but transferring files will reveal the differences in their NAND.
 
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MajorFubar said:
Is that supposed to be impressive? The computer we're calling slow has 1500+ megabits r/w, not kilobits, and the M1 before it has double that.
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I suppose it is ,but not in the way that "my sister's laptop is so good ",but rather "apple is so freaking cheap and is getting even more cheap as time passes by"

I'm talking in mb brother ,not kb .

hers has around 6k as in 6 thousands (k stands for a thousand here) [more like 5.5k in fact,iirc]

my Mba M1 hovers around 2.5/3k

MBP M2 is 1.5k

now tell me ,how would u call such a thing
 
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personally, i am looking forward to actual, real-world benchmarks on the M2 air, and actual comparisons with the M1 air. we've not seen that specific info yet, since the new airs are not yet in the wild.

but fun to watch ppl 'explain' the failures of the new air, before it's released... :rolleyes:
 
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fisherking said:
personally, i am looking forward to actual, real-world benchmarks on the M2 air, and actual comparisons with the M1 air. we've not seen that specific info yet, since the new airs are not yet in the wild.

but fun to watch ppl 'explain' the failures of the new air, before it's released... :rolleyes:
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Just educated guesswork, the foundations this whole site is built upon.
 
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Frankly I find the slower ssd a non starter for longevity overall. So suddenly I’m looking at the 1TB models by default. 512gb has same issue from what I hear. Then the cost is so much more then I just say f it and got an iPad Air. I’ll spend that money on a studio display I guess, have a docked iPad come fall with iPadOS16.
 
Throttling tests are going to be fun. I don't think heat will be much of an issue. The throttling in these things is very sophisticated.

It used to not be so. We shall see.
 
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blkjedi954 said:
True but I think they’re discussing read/write speeds. MacWorld shows that the M1 is indeed about 76% faster than M2 in R/W speeds. CPU they are similar but transferring files will reveal the differences in their NAND.
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But that's only for the base M2 with a 256GB SSD. The model they tested with 1TB SSD is faster.
 
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yitwail said:
But that's only for the base M2 with a 256GB SSD. The model they tested with 1TB SSD is faster.
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right. but no one's yet tested the M2 air. wouldn't it make sense to wait and see actual benchmarks for the actual mac we're discussing here? and see comparisons to the M1 air?

just seems that real-world info would be more useful than speculation and assumptions...
 
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ikramerica said:
Increasing clock speed creates more heat. We know this. And the die is larger. This chip is a major disappointment and makes me concerned that Apple had a great gen 1 without a viable roadmap to make the transition worth it long term.
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I think Apple has a viable roadmap but TSMC was not ready with its 3nm process. So Apple thought the A14 based M1 was great, let's do more or less the same based on the A15 because otherwise we have to wait even longer to get a successor out. So they did and I think the chip is good enough. And that's also why there are rumours that the M2 Pro and M2 Max will be made with TSMCs 3nm process. That would mean from an engineering standpoint the M2 Pro and Max would not have much in common with the M2. But who cares, those are just names.
 
I came across this terminal command while googling:
Code: 
sudo powermetrics -s cpu_power -n 1

I only have a M1 MacBook Air, but it seems to show that both the E & P cores can run at a number of frequencies, not necessarily the 2064 MHz and 3204 MHz max speed for E & P cores. So I suspect the same is the case with M2, and as long as it's running the same load as an M1, I expect power consumption to be comparable, but I could be barking up the wrong tree.
 
The M1 Air is brilliant when it comes to heat, and needs to be pushed for a while before throttling becomes a problem. I had some heat issues with older MacBooks, where the stop/start cadence of editing was still enough to reduce performance. I haven't experienced anything like this with the M1 Air... and even if the M2 is a little worse it's still probably pretty good.

I wonder if it's in situations where you push the CPU and GPU at the same time you'll run into problems. But maxing just one won't be problem. Usually games will max the gpu and most other things will max the cpu... so both at the same time is rare outside of video rendering.

I'm curious about the cooling setup though, because this is the first Air built around the cpu. The M1 seems great, but it has more than enough cooling dealing with intel chips before. Since the M1 is in iPads... the Air's cooling almost seems like overkill.

At worst it'll just get hotter for more performance on the high end, which is perfectly reasonable.
 
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Pugly said:
I'm curious about the cooling setup though, because this is the first Air built around the cpu. The M1 seems great, but it has more than enough cooling dealing with intel chips before. Since the M1 is in iPads... the Air's cooling almost seems like overkill.
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When Apple replaced the Intel chips in the Air with the M1 they also removed the fan that was in there when there was Intel inside. So Apple removed any cooling capabilities and just shoved the M1 in. 🙂
I hope that they did a little bit more with the new Air and created some kind of heat dissipation.
 
Macalway said:
Throttling tests are going to be fun. I don't think heat will be much of an issue. The throttling in these things is very sophisticated.

It used to not be so. We shall see.
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These tests are useless without context. Benchmarks are good to compare to specific models but the raw information has to be interpreted as to how that effects real world use. Most of these YouTube “content creators” only try to sensationalize these numbers instead of interpreting them into real world use. What does the MacBook Air getting 15,812.6 vs the Pro getting 14,753.9 on the Intergalactic Space Explore MK II benchmark mean to me browsing YouTube. Does that mean when I click the link to start the video it will start 0.004 seconds faster? How will this effect me typing Word documents or editing a photo?

Artificially maxing out the CPU and GPU just to show how hot it gets is another silliness they do. I’m sure there’s someone that runs an application for work that does this but they’re probably not running it on a MacBook Air or even that not so much “Pro” 13” MacBook
 
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daavee80 said:
There are photos on the web of the new Air’s internals. The heat sink appears to be about twice the mass of the M1’s!
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Fingers crossed they’ve improved the new air chassis. Apple will obviously have known the exact power draw and heat generated by the new m2 chip so you’d like to think they’ve specifically designed the heat sink and thermals of the laptop around it!

I guess we’ll find out tomorrow! :)
 
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hungryghosty said:
Fingers crossed they’ve improved the new air chassis. Apple will obviously have known the exact power draw and heat generated by the new m2 chip so you’d like to think they’ve specifically designed the heat sink and thermals of the laptop around it!
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Hopefully! It looks pretty good to my untrained eye. The last chassis obviously started out in 2018 with a fan in it with the heat sink subsequently modified for passive cooling with the M1. This new design has a heat sink that spans the entire width of the chassis with seemingly no compromise for passively cooling the SoC relative to the M1. Not long to wait now until we get initial accounts of sustained performance but I’m far more confident about it now having seen the internals.
 
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daavee80 said:
There are photos on the web of the new Air’s internals. The heat sink appears to be about twice the mass of the M1’s!
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Yeah - that thing looms massive

Guess that explains the much improved sustained performance over the M1 Air that the Verge documented.
 
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