[Aurornis]

I doubt it was intentional, but you're very right that the old laptops had terrible thermal design.

Under load, my M1 laptop can pull similar wattage to my old Intel MacBook Pro while staying virtually silent. Meanwhile the old Intel MacBook Pro sounds like a jet engine.

[eyegor]

The m1/m2 chips are generally stupid effecient compared to Intel chips (or even amd/arm/etc)... Are you sure the power draw is comparable? Apple is quite well known for kneecapping hardware with terrible thermal solutions and I don't think there are any breakthroughs in the modern chassis.

I couldn't find good data on the older mbpros, but the m1 max mbpro used 1/3 the power vs an 11th gen Intel laptop to get almost identical scores in cinebench r23.

https://www.anandtech.com/show/17024/apple-m1-max-performanc...

[derefr]

> Apple is quite well known for kneecapping hardware with terrible thermal solutions

But that was my entire point (root thread comment.)

It's not that Apple was taking existing Intel CPUs and designing bad thermal solutions around them. It's that Apple was designing hardware first, three years in advance of production; showing that hardware design and its thermal envelope to Intel; and then asking Intel to align their own mobile CPU roadmap, to produce mobile chips for Apple that would work well within said thermal envelope.

And then Intel was coming back 2.5 years later, at hardware integration time, with... basically their desktop chips but with more sleep states. No efficiency cores, no lower base-clocks, no power-draw-lowering IP cores (e.g. acceleration of video-codecs), no anything that we today would expect "a good mobile CPU" to be based around. Not even in the Atom.

Apple already knew exactly what they wanted in a mobile CPU — they built them themselves, for their phones. They likely tried to tell Intel at various points exactly what features of their iPhone SoCs they wanted Intel to "borrow" into the mobile chips they were making. But Intel just couldn't do it — at least, not at the time. (It took Intel until 2022 to put out a CPU with E-cores.)

[dijit]

the whole premise of this thread is that this reputation isnt fully justified, and thats one I agree with.

Intel for the last 10 years has been saying “if your CPU isn't 100c then theres performance on the table”.

They also drastically underplayed TDP compared to, say, AMD, by taking the average TDP with frequency scaling taken into consideration.

I can easily see Intel marketing to Apple that their CPUs would be fine with 10w of cooling with Intel knowing that that they wont perform as well, and Apple thinking that there will be a generational improvement on thermal efficiency.

[senttoschool]

>Under load, my M1 laptop can pull similar wattage to my old Intel MacBook Pro while staying virtually silent. Meanwhile the old Intel MacBook Pro sounds like a jet engine.

On a 15/16" Intel MBP, the CPU alone can draw up to 100w. No Apple Silicon except an M Ultra can draw that much power.

There is no chance your M1 laptop can draw even close to it. M1 maxes out at around 10w. M1 Max maxes out at around 40w.

[dijit]

Where do you get the info about power draw?

Intel doesn't publish anything except TDP.

Being generous and saying TDP is actually the consumption; most Intel Mac's actually shipping with "configurable power down" specced chips ranging from 23W (like the i5 5257U) to 47W (like the i7 4870HQ); (NOTE: newer chips like the i9 9980HK actually have a lower TDP at 45w)

of course TDP isn't actually a measure of power consumption, but M2 Max has a TDP of 79W which is considerably more than the "high end" Intel CPU's; at least in terms of what Intel markets.

[senttoschool]

Check here: https://www.anandtech.com/show/17024/apple-m1-max-performanc...

Keep in mind that Intel might ship a 23w chip but laptop makers can choose to boost it to whatever it wants. For example, a 23w Intel chip is often boosted to 35w+ because laptop makers want to win benchmarks. In addition, Intel's TDP is quite useless because they added PL1 and PL2 boosts.

[dijit]

Apple always shipped their chips with "configurable power down" when it was available, which isn't available on higher specced chips like the i7/i9 - though they didn't disable boost clocks as far as I know.

The major pains for Apple was when the thermal situation was so bad that CPUs were performing below base clock. -- at that point i7's were outperforming i9's because they were underclocking themselves due to thermal exhaustion; which feels too weird to be true.

[senttoschool]

That's not Apple. That's Intel. Intel's 14nm chips were so hot and bad that they had to be underclocked. Every laptop maker had to underclock Intel laptop chips - even today. The chips can only maintain peak performance for seconds.

[MichaelZuo]

Can you elaborate?

My 2019 macbook pro 15 with the i9-9880H can maintain the stock 2.3GHz clock on all cores indefinitely, even with the iGPU active.

[epolanski]

My 2019 MBP literally burned my fingertips if I used it while doing software development in the summer.

[JuanPosadas]

Back in the Dell/2019MBP era every day was summer for me.