[Video] It looks like the 14" with M1 Max is not limited at all, and has the same raw power of the 16" model!

[Ploki]

His thermals video is helpful to watch, too.

So 16” is undertuned?

 

[theluggage]

Yes, but the fans are actually a lot smaller on the 14" model, the chassis is also obviously smaller too, but beside that, the Power Adapter on the 16" is providing 45W+ more power! which is too much for the difference in battery/screen size.

- 14" battery is 70Wh, 16" battery is 100Wh (source: everymac.com) = 43% bigger.

- a 16" screen is 1.14 times the linear dimensions of a 14" screen, but power consumption is likely to go with area (number of pixels, number of illumination LEDs) which is 1.14 squared = 1.3 times that of a 14". So that's 30% more power required.

So, even if the rest of the computer doesn't use any more power, two of the big power requirements have increased by 30-40% so increasing the power supply capacity by 45% doesn't seem excessive. (...and the "sizes" of power supply that it is practical to make a probably determined by component availability and the USB PD standards).

Also, larger fans can shift the same amount of air as a small fan while running slower - so it would be interesting to compare the noise levels of a 14" and 16" under heavy load.

 

[macpot]

- 14" battery is 70Wh, 16" battery is 100Wh (source: everymac.com) = 43% bigger.

- a 16" screen is 1.14 times the linear dimensions of a 14" screen, but power consumption is likely to go with area (number of pixels, number of illumination LEDs) which is 1.14 squared = 1.3 times that of a 14". So that's 30% more power required.

So, even if the rest of the computer doesn't use any more power, two of the big power requirements have increased by 30-40% so increasing the power supply capacity by 45% doesn't seem excessive. (...and the "sizes" of power supply that it is practical to make a probably determined by component availability and the USB PD standards).

Also, larger fans can shift the same amount of air as a small fan while running slower - so it would be interesting to compare the noise levels of a 14" and 16" under heavy load.

I thought laptop screens use like 10-15W at max so the 1.3X wouldn't matter much (like only 3-4W extra),
but after some searching it appears to be much higher (like 50-60W).

So you're right, it does seem that's a significant part of the extra power required.

 

[UBS28]

Even though the chassis is smaller, and the fans are also smaller on the 14", it appears the 14" with M1 Max is still as powerful as the 16" with M1 Max.

I'm still confused, if this is the case, then why the 16" needed to be thicker and also have a 140W charger...

Maybe they are just planning for the years ahead, when they will include maybe a M2 Max with 64 cores on the 16 inch?

Because the 16" can go in Turbo mode with the M1 Max, which the 14" cannot do. The 16" is more powerful in the end.

But most importantly, the temperatures will be lower and it will also be quieter for this reason.

 

[UBS28]

So 16” is undertuned?

I don't think he was using the high-performance mode correctly. Or there is a bug for it to be activated properly if he says there is no difference between lower power mode and high performance mode.

 

[Sanpete]

- 14" battery is 70Wh, 16" battery is 100Wh (source: everymac.com) = 43% bigger.

- a 16" screen is 1.14 times the linear dimensions of a 14" screen, but power consumption is likely to go with area (number of pixels, number of illumination LEDs) which is 1.14 squared = 1.3 times that of a 14". So that's 30% more power required.

So, even if the rest of the computer doesn't use any more power, two of the big power requirements have increased by 30-40% so increasing the power supply capacity by 45% doesn't seem excessive. (...and the "sizes" of power supply that it is practical to make a probably determined by component availability and the USB PD standards).

Also, larger fans can shift the same amount of air as a small fan while running slower - so it would be interesting to compare the noise levels of a 14" and 16" under heavy load.

More pixels also requires more processing power to drive.

The fan noise was measured in this review, the 16" was quieter. At 7:30:

I don't think he was using the high-performance mode correctly. Or there is a bug for it to be activated properly if he says there is no difference between lower power mode and high performance mode.

All high-performance mode does is allow the fans to spin up sooner. It doesn't directly affect performance.

 

[sk8r1230]

For those that think there are no major differences from one video i would encourage you to watch this one.

 

[Ploki]

For those that think there are no major differences from one video i would encourage you to watch this one.

god i wanted 14" so bad... but 16" has faster SSD as well.
14" on 5800 RPM, 16" 1500 RPM.

looks like to me that 16" could be pushed 10-15% higher performance wise. They literally nerfed 16" to get the same performance. weird.