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mr_roboto

macrumors 6502a
Sep 30, 2020
856
1,866
Number of channels doesn't change ddr power consumption, you can't just turn ddr off, again - if the bandwidth was due to clock - yes, it would consume more. If channels - no. And since the difference is 2x it's channels most likely.
Number of channels absolutely does change DDR power consumption, as a big chunk of that is the power required to wiggle the lines connecting DDR to its controller. Twice as many data and control I/O means twice the I/O power.

Rule of thumb always was power ~ memory size, regardless of packaging. So 4x8 should have similar power requirements as 2x16. And the 64GB should consume twice as 32GB.
I don't know where you're getting your rules of thumb from. Different organizations of the same number of bits can have a major impact on power in DRAM.
 

UBS28

macrumors 68030
Oct 2, 2012
2,893
2,340
What I saw on youtube, is that the 32-core GPU on the 14” is a waste and it is better to save some money and settle for the 24-core GPU.

I’m not even sure if the 16” MBP gets the maximum out of the 32-core GPU as it is not scaling linearly with the amount of cores.

We will see with the upcoming 27“ iMac M1 Max if the 16” MBP is also restraining the 32-core GPU.
 

Thysanoptera

macrumors 6502a
Jun 12, 2018
910
873
Pittsburgh, PA
What I saw on youtube, is that the 32-core GPU on the 14” is a waste and it is better to save some money and settle for the 24-core GPU.
I run some GFXbench, offscreen Aztec Ruins (high tier) 285 fps, 1080p Manhattan 1211 fps, 1080 T-rex 2133 fps, which sits in between of 24 and 32 core 16''. Couldn't find 14'' 24 core results. Total power sensor seems to be limited to ~62W, which I like, I got spooked by anandtech saying there are no power limits in 16'', it seems they are in 14''.
 

ian87w

macrumors G3
Feb 22, 2020
8,704
12,638
Indonesia
I initially had my heart set on a MBP 14 with 32GB RAM and the M1 Max with 24-cores. I had decided that my normal usage consistenlty uses 25-30GB RAM so would need the 32GB. Considering the switch from M1 Pro to M1 Max is only $200 beyond this point, it sounded like a good deal.

However, recent videos from MaxTech (
), The Tech Chap (
), and another guy using his MBP14 for music (
), plus reviews from The Verge, Wall Street Journal and Mobile Tech Review, have shown that the MBP14 with M1 Max seems to consistently have higher temperature, high fan speeds (& noise) and poor battery life (maybe only 6-8 hours of "web + youtube + video conferencing" and maybe only 3-4 hours under heavy load.

It does look like Apple has taken the approach of making the 14" M1 Max almost equal to the 16" M1 Max in peformance (which is good if you need it) but at the cost of really high temperatures (MaxTech measured 106C processor cores), fan noise and a subsequent hit on the battery, maybe losing 2-3 hours to the 16" model.

I'm now wondering whether running the M1 Max in the 14" is turning the computer into a niche model for people who want the power, and the small form-factor, but don't need to do much work unplugged. It looks like that they sacrified the "general purpose small laptop" approach of the MBA and MBP13 and have gone for brute power, by compromising on qualities that distinguish Macs for their competitors (i.e. quiet with good battery life).

One of the main reasons for wanting to move from my current MBP16 would be to get better battery life (I often only get 5-6 hours and much less when editing video) and to have something that runs cooler and quieter. It doesn't look like the MBP 14 with M1 Max would really be that much of an improvement, apart from being smaller and faster. Perhaps I'm just being greedy!

Do you think apple went too far by cramming the M1 Max into a 14" body?
Apple is segmenting the Apple Silicon Macbooks quite clearly this time. The 14" and 16" are basically mobile workstation/desktop replacement class laptops. For the performance, the 14" and 16" battery life are still decent, considering workstation class laptops generally don't last more than 2 to 3 hours under load. Fan noise is unavoidable, but at least they come with the performance (compared to intel where you get the heat and noise even when doing nothing).

But you are probably right. M1 Max in the 14" is probably a niche model. But I'm sure there are people who are glad that Apple made that option available. Until Apple release the Apple Silicon iMac Pro and Mac Pro, for some people, these new Macbook Pros are practically their desktop workstation.
 
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brydav

macrumors newbie
Apr 11, 2011
3
1
Arkansas, USA
But you are probably right. M1 Max in the 14" is probably a niche model. But I'm sure there are people who are glad that Apple made that option available.
Tim Millet, Apple VP of Platform Architecture essentially said this in his interview with Rene Richie. He called the M1 Max a love letter to the 14 inch MacBook Pro and those who love portability. In the past, the most powerful features were typically limited to the 16 inch version.
 
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Thysanoptera

macrumors 6502a
Jun 12, 2018
910
873
Pittsburgh, PA
Tim Millet, Apple VP of Platform Architecture essentially said this in his interview with Rene Richie. He called the M1 Max a love letter to the 14 inch MacBook Pro and those who love portability. In the past, the most powerful features were typically limited to the 16 inch version.
And it is glorious. It's the first time really we have almost the same performance between the small and big MBP, and same memory and storage options. It's on my list of instant classics together with 2009 MP and 2012 retina MBP.
 
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mr_roboto

macrumors 6502a
Sep 30, 2020
856
1,866
From Corsair. But what do they know.
Say you're building a desktop PC, you want 16GB RAM, and there's two 64-bit DIMM channels with two DIMM slots per channel. Is there a change in power if you populate 4x4GB versus 2x8GB single rank DIMMs?

The answer is: absolutely yes. The 4x4GB configuration has twice the number of ranks, meaning twice the number of open pages. The number of bits may be the same, but under load the 4x4 config can serve more page open requests in parallel. This improves performance, but the price is more power. Nothing's free.
 

Thysanoptera

macrumors 6502a
Jun 12, 2018
910
873
Pittsburgh, PA
This improves performance, but the price is more power. Nothing's free.
And if performance is the same? The whole discussion is about Max vs Pro and I'm trying to debunk the claim that memory architecture is responsible for significantly higher energy consumption of the Max, and not double the GPU cores. Max doesn't reach anywhere near its theoretical limit.

Now the memory controller will be loaded more due to higher ACTUAL bandwidth (not just the one that's possible) but so far I haven't seen anybody reaching the 400 number Apple promised and maybe doing 10% more on Max than on Pro. From memory power consumption perspective they're the same.
 

m1maverick

macrumors 65816
Nov 22, 2020
1,368
1,267
Apple is segmenting the Apple Silicon Macbooks quite clearly this time. The 14" and 16" are basically mobile workstation/desktop replacement class laptops. For the performance, the 14" and 16" battery life are still decent, considering workstation class laptops generally don't last more than 2 to 3 hours under load. Fan noise is unavoidable, but at least they come with the performance (compared to intel where you get the heat and noise even when doing nothing).
I've gotta take issue with this. I have been using an HP Z-Book Studio G5 (and prior to this a G3) for two years and I have had no issues with heat / noise when doing regular work let alone nothing. Apple advocates really need to quite embellishing their arguments against PC alternatives.
 

Technerd108

macrumors 68040
Oct 24, 2021
3,062
4,313
I've gotta take issue with this. I have been using an HP Z-Book Studio G5 (and prior to this a G3) for two years and I have had no issues with heat / noise when doing regular work let alone nothing. Apple advocates really need to quite embellishing their arguments against PC alternative

No you are just flat out wrong!! I have an HP Spectre 15.6" with an i7 1165G7 and 16gb ram with 512gb ssd and just turning it on the fans are spinning. Doing anything that taxes the system at all the fans come on. Also heat is a huge issue as the laptop heats up fast if vents are blocked and there are two fans, heat pipes and lots of vents so cooling is actually really good yet it still heats up fast and fans are on a lot of the time.

Compare that to the base model MBP 16" and I have yet to hear the fans come on at all. I can run several programs at the same time including stress testing and benchmarking and NO fans at all at least I don't feel any air moving and when I put my ear right next to the vents on the MBP I hear nothing?? On my Windows 11 pro system with specs above just browsing will set the fans on high.

Now maybe you don't heart your fans because you have it on silent setting or balanced. If you were to change to high performance you would hear fans more I am sure.

Either way I know that if you put the two machines side by side-your G5 against a new 14 or 16" MBP doing the same tasks the MBP will be silent and barely break a sweat and the G5 will struggle if both are under heavy load. The M1 Pro does get warm on my lap when pushing it but never hot and I have yet to hear the fans.

In this case with these new MBP Apple under sold them. Most of their claims are true even GPU if you are using software that can use all the accelerators and M1 native software. This is the one time where Apple has outclassed Windows machines in almost every way. Give me a metric on a Laptop- sound, screen, performance, stability, build quality, battery life, performance on battery, and even cost when compared to similar specced machines and Apple wins. This is coming from someone who has had a lot of Intel/AMD Windows based laptops/desktops over the years and has used Windows as the primary OS for many years. There simply is nothing like these new MacBooks.
 

ian87w

macrumors G3
Feb 22, 2020
8,704
12,638
Indonesia
I've gotta take issue with this. I have been using an HP Z-Book Studio G5 (and prior to this a G3) for two years and I have had no issues with heat / noise when doing regular work let alone nothing. Apple advocates really need to quite embellishing their arguments against PC alternatives.
I meant the previous Intel MacBook Pros.
 
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bill-p

macrumors 68030
Jul 23, 2011
2,929
1,589
I've gotta take issue with this. I have been using an HP Z-Book Studio G5 (and prior to this a G3) for two years and I have had no issues with heat / noise when doing regular work let alone nothing. Apple advocates really need to quite embellishing their arguments against PC alternatives.

I have a Zbook right next to me. It barely lasts half as long as my 14" MacBook Pro with the same tasks, the fans are constantly on and in fact, they go crazy whenever I start a build in IntelliJ, and I don't even want to have to mention heat.

The 14" is... silent. As in the fan is not even on, or if it is, it's lower than ambient noise (27dB in my office). So with my workflow, the 14" is faster, quieter, and longer-lasting than the Zbook. Sorry to say.

This is a Zbook G6 with i7 9850H, 32GB RAM by the way. Versus the 14" MacBook Pro with only 16GB RAM.
 

mr_roboto

macrumors 6502a
Sep 30, 2020
856
1,866
And if performance is the same? The whole discussion is about Max vs Pro and I'm trying to debunk the claim that memory architecture is responsible for significantly higher energy consumption of the Max, and not double the GPU cores. Max doesn't reach anywhere near its theoretical limit.
The double GPU cores shouldn't matter until they're actually in use. They're a prime candidate for being power gated while demand for GPU services is low.

Remember when everyone was super worried about M1 Max appearing to have poor scaling in early/leaked GB5 GPU compute results? Turned out that was just the GB5 compute test running for such a short duration that it's mostly done before the system has managed to bring more GPU cores online. Such delays hint that the additional cores start out in a power-down state.

Once you do have a use for the GPU, paradoxically, sometimes the big GPU config should be more power efficient. GPUs are throughput engines, so for any given performance requirement P you need N compute elements at clock speed C (P = N * C). In M1 Max, N is twice as big, so if P doesn't change that implies C can be cut in half. Since power vs frequency plots are typically nonlinear curves, that's a big deal. There's going to be real loads out there where the M1 Max GPU actually uses less power to do the same job.

That said, of course this kind of thing can only happen while P stays close to the maximum you can get out of M1 Pro at its highest GPU clock speed. If your load effectively grows P to match whatever the GPU can give, obviously the Max GPU will eat twice as much power.

In sum, M1 Max should use more power than M1 Pro even in loads where the GPU is nearly idle. But while the GPU is mostly idle, the extra power draw isn't due to the GPU itself, it's due to the memory.
 

Fomalhaut

macrumors 68000
Original poster
Oct 6, 2020
1,993
1,724
I've gotta take issue with this. I have been using an HP Z-Book Studio G5 (and prior to this a G3) for two years and I have had no issues with heat / noise when doing regular work let alone nothing. Apple advocates really need to quite embellishing their arguments against PC alternatives.
I think he is referring to Intel *Macs* (e.g. the 2019 MBP16), not Wintel laptops.
 
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Fomalhaut

macrumors 68000
Original poster
Oct 6, 2020
1,993
1,724
So after all the (very useful) comments in the thread I started, have we been able to reach any kind of conclusion?

Some more recent comparisons from YouTube channels "Luke Miani" and "Created Tech" show the M1 Max using more battery even when not pushing the GPU hard (e.g. Cinebench or "light usage"). Of course, it's impossible to extrapolate the behaviour for every possible usage type, which is why we have such diverse results.

Comparing the 16-core M1 Pro and the 24-core M1 Max in the 14", the rough consensus seems to be that:

1) For the same workloads, even non-GPU heavy, the M1 Max gets 5-10% less battery life.

2) The M1 Pro 16-core can get between 7-10 hours of "light usage" - although some users report getting more. From this let's assume in the worst case that an M1 Max is 7-7.5 hours of "light use" - I'm taking this to include a mix of web-browsing, reading/writing documents, consuming streaming media (audio/video), some video conferencing (maybe an hour?)

3) Really heavy use (e.g. video export) seems to hit the battery much harder with maybe only 1.5-3 hours unplugged (TheUnlockr YT channel showed about 1.3% battery use *per minute* during a FinalCutPro export )

4) The 24-core M1 Max is significantly faster *in some tasks* that make use of the GPU cores. Some gains are only a few % - others (for video processing) are about 20-30%, and some render/exports seem to get larger improvements.

5) There may not be much improvement going from 24 cores to 32 cores on the MBP14 - but I'd like to see some actual test results here.

So I'm going to modfify my initial hypothesis that the M1 Max is going "too far". I think it's nice to have the option, and it will be useful for some workloads, at the cost of somewhat reduced battery life for all workloads.

I'm trying to take a realistic view of my own usage to make a decision between these two, based on the following criteria:

i) How much will I really need to use the machine away from AC power? -> probably only for a few hours at a time (travelling, at meetings, on the couch), and not all-day. I doubt would be doing high-intensity work when unplugged. For longer periods (e.g. long-haul flights with no power sockets), low-power mode should be enough to get 10 hours use.

ii) How often would I use the M1 Max's capabilities? -> it does seem to have some advantages to most stages of video editing working, even playback and scrubbing, and is usefully faster for rendering and exporting. I suspect the difference to the M1 Pro would become more apparent with more complex timelines. For development (my day job), it has a useful performance improvement for some tasks, and is "nice to have"

iii) Will heat and fan noise be a problem? -> I dislike this on my Intel MBP16, but it doesn't appear to be a big problem in normal use, and the consensus seems to be that the fans only ramp up under heavy load, and are not noticeable under light loads (even if they are faster on the Max vs the Pro).

So for me, the needle is shifting back toward the 24-core M1 Max...

Has anyone else changed their opinion after seeing recent reviews?
 

Thysanoptera

macrumors 6502a
Jun 12, 2018
910
873
Pittsburgh, PA
In sum, M1 Max should use more power than M1 Pro even in loads where the GPU is nearly idle. But while the GPU is mostly idle, the extra power draw isn't due to the GPU itself, it's due to the memory.
I really think you guys just saw powermetrics readings, that list CPU and GPU at mW at idle while DRAM show 1W and made up a theory, like that AnandTech writer who couldn't add the numbers.

Like right now, I'm running Valley, in powermetrics package power 16W, CPU 3.5 W, GPU 3W, DRAM 3W, while total system power shown in iStatMenu (which I believe - corresponds to better drain) shows 33W. It's got to be the memory right, the difference between package and total. 3W on GPU while generating landscape at 100 fps is totally legit.

BTW - the memory bandwidth is earth shattering 30GB/s, half reads, half writes.That looks reasonable.
 

Technerd108

macrumors 68040
Oct 24, 2021
3,062
4,313
So after all the (very useful) comments in the thread I started, have we been able to reach any kind of conclusion?

Some more recent comparisons from YouTube channels "Luke Miani" and "Created Tech" show the M1 Max using more battery even when not pushing the GPU hard (e.g. Cinebench or "light usage"). Of course, it's impossible to extrapolate the behaviour for every possible usage type, which is why we have such diverse results.

Comparing the 16-core M1 Pro and the 24-core M1 Max in the 14", the rough consensus seems to be that:

1) For the same workloads, even non-GPU heavy, the M1 Max gets 5-10% less battery life.

2) The M1 Pro 16-core can get between 7-10 hours of "light usage" - although some users report getting more. From this let's assume in the worst case that an M1 Max is 7-7.5 hours of "light use" - I'm taking this to include a mix of web-browsing, reading/writing documents, consuming streaming media (audio/video), some video conferencing (maybe an hour?)

3) Really heavy use (e.g. video export) seems to hit the battery much harder with maybe only 1.5-3 hours unplugged (TheUnlockr YT channel showed about 1.3% battery use *per minute* during a FinalCutPro export )

4) The 24-core M1 Max is significantly faster *in some tasks* that make use of the GPU cores. Some gains are only a few % - others (for video processing) are about 20-30%, and some render/exports seem to get larger improvements.

5) There may not be much improvement going from 24 cores to 32 cores on the MBP14 - but I'd like to see some actual test results here.

So I'm going to modfify my initial hypothesis that the M1 Max is going "too far". I think it's nice to have the option, and it will be useful for some workloads, at the cost of somewhat reduced battery life for all workloads.

I'm trying to take a realistic view of my own usage to make a decision between these two, based on the following criteria:

i) How much will I really need to use the machine away from AC power? -> probably only for a few hours at a time (travelling, at meetings, on the couch), and not all-day. I doubt would be doing high-intensity work when unplugged. For longer periods (e.g. long-haul flights with no power sockets), low-power mode should be enough to get 10 hours use.

ii) How often would I use the M1 Max's capabilities? -> it does seem to have some advantages to most stages of video editing working, even playback and scrubbing, and is usefully faster for rendering and exporting. I suspect the difference to the M1 Pro would become more apparent with more complex timelines. For development (my day job), it has a useful performance improvement for some tasks, and is "nice to have"

iii) Will heat and fan noise be a problem? -> I dislike this on my Intel MBP16, but it doesn't appear to be a big problem in normal use, and the consensus seems to be that the fans only ramp up under heavy load, and are not noticeable under light loads (even if they are faster on the Max vs the Pro).

So for me, the needle is shifting back toward the 24-core M1 Max...

Has anyone else changed their opinion after seeing recent reviews?
I agree with everything you said. I think all of your observations are so far correct and I don't see anything changing anytime soon!

I have been concerned about ram pressure and although I bet it is not a problem for anything I do now 32GB of RAM is both better in the short term and much better down the road so the M1 Max is only $200 more to get 8 more iGPU and double the bandwidth for the memory seems like it would also be a good thing to get considering how much these already cost at baseline. That extra GPU and memory should keep things running better longer. I have heard in certain senecios where the M1 Max is lower in battery use in certain applications because it takes less time to get the task done. There is also double the encoders for video that would speed up video and photo editing and exporting with the Max.

I would imagine the Max with 24 core iGpu and 32GB Ram would get the best battery life and would be comparable to the M1 Pro with 32GB RAM in 14" or 16". I bet the battery life difference between the two would be very small in real life. The base model 16" is probably the battery king of the bunch but the 14" is still no slouch.
 

MK500

macrumors 6502
Aug 28, 2009
434
550
I love my 32GB 14" Max and think the tradeoffs are exactly what I expected, and I would have made the same choices if I were in the Apple engineering department. Everything in life is a tradeoff.

It runs extremely cool and quiet in comparison to high power Windows laptops I have had much experience with (and often sound like jet engines when running full load). The MacBook is a miracle of engineering by comparison.

It would be incredibly sad if Apple had decided to put a reduced performance chip in the 14" model because I love having a highly portable laptop that on average performs within 5% to 10% of the 16" model. My opinion is that for most real world tasks (which are often bursty), the performance difference is less than 5%.

I have had a few sessions where I ran down the battery from 100% using software that pushed the GPU and also CPU extremely hard 100% of the time. My battery run time during this was 3.5 to 4 hours. This is completely acceptable to me for super intense usage - and not something I will be doing constantly. I can't imagine what I would have to do to bring it down to less than 3 hours. That would be an edge case to be sure.

One big benefit of the extremely efficient M1 is that I can have a low wattage charger or battery box with me to add power and it's not a big deal to just connect it to one of the USB C ports to keep it running or even charge up a bit. This is in comparison to the monstrous 150Watt+ bricks high power Windows laptops ship with.

I haven't actually unpacked my MagSafe cable or Apple charger yet. I had enough USB C chargers in various places, and they seem to charge at a perfectly acceptable rate (most are 40 to 60 watt chargers). It's cool I can use the same chargers for my iPad Pro, headphones, and now MacBook. I generally prefer slower charging to faster charging, as my gut tells me this will give me better battery longevity.

Anyway, there are compromises, but the 14" is very smartly designed.

YouTube reviews will tend to find edge cases and amplify them because that's what gets the clicks. I have no problem with this; and find them entertaining as well.
 
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leman

macrumors Core
Oct 14, 2008
19,521
19,678
I've gotta take issue with this. I have been using an HP Z-Book Studio G5 (and prior to this a G3) for two years and I have had no issues with heat / noise when doing regular work let alone nothing. Apple advocates really need to quite embellishing their arguments against PC alternatives.

What CPU does your Z-Book use? Recent Intel i9 will burst to 40-50W practically on any occasion. Laptop brand doesn’t matter. Now, if you are using a CPU with more reasonable config, you might not notice anything like that. But of course, there will be a difference in performance.
 

lclev

macrumors 6502a
Jul 29, 2013
551
393
Ohio
I purchased the M1 Max/64GB/1Tb. Prior to it arriving I had watch and read and wondered if the cost would be worth the performance I needed. I do a lot of video work using Premiere, After Effects, and Photoshop. I wanted portability and power. I work most often with HD and some 4K most are an hour in length. I create short videos for a variety of promos.

Now to performance. I have a Windows 10 PC with a 24 core, 2970x Threadripper, 64GB DDR4 Ram, GTX 1080 8GB video and several 1TB NVMe SSDs. I took a 90 minute video and used Hanbrake to rip the mkv file to an mp4. The M1 MBP was 5 minute faster than the PC at completing the task. Edited the video and sent it to the media encoder - now a 60 minute video full of all kinds of titles, pictures, music etc. I was doing this on both the PC and the MBP at the same time.

I had the MBP connected to a 4K monitor as well as the PC. Interestingly when I started the encoding on the MBP it did a few frames and stopped. I watched the encoding time keep increasing and though well poop... The PC was encoding along smoothly and I figured the MBP was having an issue. After a minute the encoding on the MBP took off and smoked the PC. It was very interesting but the MBP ended up finishing the video 2 minutes faster than the PC. Overall a 60 minute video usually takes about 15-18 minutes to encode on the PC.

The MBP got warm but I never heard the fans - not saying they were not on but they were quiet. I did have iStat running but I forgot to take screenshots - sorry! Does it eat through the battery when it is rendering or encoding? Yes - but I plug it into a USB-C charger at work and I am good. When I am not using it to do video work I put it in low power mode and it will last all day or more.

I could care less what the YouTubers have to show using various utilities. What I care about is performance and this 14: MBP is amazing!
 
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doublemycoresplz

macrumors member
Nov 7, 2021
41
45
So after all the (very useful) comments in the thread I started, have we been able to reach any kind of conclusion?

Some more recent comparisons from YouTube channels "Luke Miani" and "Created Tech" show the M1 Max using more battery even when not pushing the GPU hard (e.g. Cinebench or "light usage"). Of course, it's impossible to extrapolate the behaviour for every possible usage type, which is why we have such diverse results.

Comparing the 16-core M1 Pro and the 24-core M1 Max in the 14", the rough consensus seems to be that:

1) For the same workloads, even non-GPU heavy, the M1 Max gets 5-10% less battery life.

2) The M1 Pro 16-core can get between 7-10 hours of "light usage" - although some users report getting more. From this let's assume in the worst case that an M1 Max is 7-7.5 hours of "light use" - I'm taking this to include a mix of web-browsing, reading/writing documents, consuming streaming media (audio/video), some video conferencing (maybe an hour?)

3) Really heavy use (e.g. video export) seems to hit the battery much harder with maybe only 1.5-3 hours unplugged (TheUnlockr YT channel showed about 1.3% battery use *per minute* during a FinalCutPro export )

4) The 24-core M1 Max is significantly faster *in some tasks* that make use of the GPU cores. Some gains are only a few % - others (for video processing) are about 20-30%, and some render/exports seem to get larger improvements.

5) There may not be much improvement going from 24 cores to 32 cores on the MBP14 - but I'd like to see some actual test results here.

So I'm going to modfify my initial hypothesis that the M1 Max is going "too far". I think it's nice to have the option, and it will be useful for some workloads, at the cost of somewhat reduced battery life for all workloads.

I'm trying to take a realistic view of my own usage to make a decision between these two, based on the following criteria:

i) How much will I really need to use the machine away from AC power? -> probably only for a few hours at a time (travelling, at meetings, on the couch), and not all-day. I doubt would be doing high-intensity work when unplugged. For longer periods (e.g. long-haul flights with no power sockets), low-power mode should be enough to get 10 hours use.

ii) How often would I use the M1 Max's capabilities? -> it does seem to have some advantages to most stages of video editing working, even playback and scrubbing, and is usefully faster for rendering and exporting. I suspect the difference to the M1 Pro would become more apparent with more complex timelines. For development (my day job), it has a useful performance improvement for some tasks, and is "nice to have"

iii) Will heat and fan noise be a problem? -> I dislike this on my Intel MBP16, but it doesn't appear to be a big problem in normal use, and the consensus seems to be that the fans only ramp up under heavy load, and are not noticeable under light loads (even if they are faster on the Max vs the Pro).

So for me, the needle is shifting back toward the 24-core M1 Max...

Has anyone else changed their opinion after seeing recent reviews?
It seems like the 32 core and 24 core max have very similar battery life due to the latter's inferior binning.
 
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