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Tomb01

macrumors 6502
Original poster
Jan 6, 2009
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Colleyville, TX
I see a lot of discussion of USB hubs, but none that have the 140w passthrough that my new 16 inch M1 Max seems to require. Anyone seen one?
 
I see a lot of discussion of USB hubs, but none that have the 140w passthrough that my new 16 inch M1 Max seems to require. Anyone seen one?

if you can get by without fast charging I wouldnt bother with that, your laptop doesnt need 140W at all times, also that OEM charger would go 140W only with magsafe, I think TB ports are limited to 100W
 
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AFAIK USB-C PD (Power Delivery) is currently limited to ~100 Watts. That will be changing (there is already a proposed update to the standard). As mentioned above - this is one of the reasons why magsafe came back.

However, you probably don't actually need to charge at 140 Watts. I can say that my 16" M1 MBP charges just fine on my Thunderbolt 3 dock that does 100 Watts to the computer. And, unlike the Intel MBPs on smaller chargers, there is no way that the CPU/GPU will actually need to pull over 100 Watts... so your battery would never drain while plugged in - even going at full-tilt.
 
Have one of the 200w asapchargers, which delivers 100w to usb-c. Have been using it, and it will charge my M1 Max when I am not using something that is resource intensive. When that happens charging seems to go 'on hold', but the battery life is much better than my 2019 16 inch MBP so at this point it is not a problem. One of the options when I check battery status is "Charge to full now", so looks like if I need to I can over ride the on hold status.
 
Have one of the 200w asapchargers, which delivers 100w to usb-c. Have been using it, and it will charge my M1 Max when I am not using something that is resource intensive. When that happens charging seems to go 'on hold', but the battery life is much better than my 2019 16 inch MBP so at this point it is not a problem. One of the options when I check battery status is "Charge to full now", so looks like if I need to I can over ride the on hold status.

100 Watts is way more than enough to charge an M1 MBP while it’s running.

Max draw I’ve seen from my 16” M1 MBP is only about 45-50 Watts… and that’s fully loaded running scientific calculations using all 10 cores.

Don’t forget that the previous-gen 16” (which I also have) had an 8-core Intel chip in it that was crazy power hungry. I’ve seen it drawing nearly 80 Watts… and it “only” had a 96 Watt charger that came with it.
 
Second question, any 140w OEM power supplies on the market yet? Thought the chargeasap 200w GAN charger might do the trick, but it is 100w per port, so not sufficient for a 140w laptop.

EDIT: OK, partially answering my own question, but after some additional web searching found this: https://www.gpowercharger.com/product/140w-usb-c-power-adapter-2/
The Chargeasap is a disaster. Not the product but all those who ordered (backers) are still waiting after more than a year. Only a handful supposedly went out to the backers.

I have seen on Amazon a handful of chargers that are greater than 100 watts and you might want to check there and as importantly, get the customer feedback from those who have purchased.
 
100 Watts is way more than enough to charge an M1 MBP while it’s running.

Max draw I’ve seen from my 16” M1 MBP is only about 45-50 Watts… and that’s fully loaded running scientific calculations using all 10 cores.

Don’t forget that the previous-gen 16” (which I also have) had an 8-core Intel chip in it that was crazy power hungry. I’ve seen it drawing nearly 80 Watts… and it “only” had a 96 Watt charger that came with it.
Hi friedmud, considering your experience with the 16" M1 MBP do you think that a monitor with usb-c power delivery up to 75 watt is enough? Is the battery going to drain while charging? Are there chances it might kill the monitor by demanding to much electricity? I'm considering to buy the 16" inches as desktop replacement and keep it constantly plugged in, your considerations would be really helpful. Thanks
 
The monitor is a ThinkVision P24h-2L https://psref.lenovo.com/syspool/Sys/PDF/datasheet/ThinkVision P24h-2L_datasheet_EN.pdf
and the configuration of the 16" MBP would be 10CPU/16GPU with 32 GB RAM
75 Watts is definitely more than enough for a non-max 16". They can draw just under 100w at absolute full power but that's extremely rare. Right now my 16" has Chrome, Safari, Spotify and Skype open and I'm playing the speakers at near full volume and max brightness on the display and it's only drawing 16w
 
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75 Watts is definitely more than enough for a non-max 16". They can draw just under 100w at absolute full power but that's extremely rare. Right now my 16" has Chrome, Safari, Spotify and Skype open and I'm playing the speakers at near full volume and max brightness on the display and it's only drawing 16w
Thank you so much for sharing your experience
 
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75 Watts is definitely more than enough for a non-max 16". They can draw just under 100w at absolute full power but that's extremely rare. Right now my 16" has Chrome, Safari, Spotify and Skype open and I'm playing the speakers at near full volume and max brightness on the display and it's only drawing 16w
What app are you using to see the power draw?
 
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The technology isn’t out yet that supports over 100w over a usb-c thunderbolt 3/4 cable. There were rumors of newer one last year but it hasn’t happened yet. Caldigit, Anker and some others make docks up too 100w max.
 
The technology isn’t out yet that supports over 100w over a usb-c thunderbolt 3/4 cable. There were rumors of newer one last year but it hasn’t happened yet. Caldigit, Anker and some others make docks up too 100w max.

I have a second MagSafe 3 cable so I could use that it if it were supported by other vendors.
 
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