5 ms·

Why does he take the back cover off and complain that the air flow and cooling don’t work properly?

slezyr 5y ago
There should be a cooper pipe between the CPU and cooler like this one[1]. Seriously, WTF? Where is it? 1: https://i0.wp.com/lemmymorgan.com/wp-content/uploads/2020/01/Heat-pipe-of-notebooks.jpg https://i0.wp.com/lemmymorgan.com/wp-content/uploads/2020/01...
- DougBTX 5y ago
  Here's an example teardown: https://guide-images.cdn.ifixit.com/igi/iUejB4OfKlPD4Fex.huge https://guide-images.cdn.ifixit.com/igi/iUejB4OfKlPD4Fex.hug... The heat pipe is the part just above and to the left of the fan.
  - slezyr 5y ago
    That's a different model, there is no heat pipe in the video see https://youtu.be/iiCBYAP_Sgg?t=57 https://youtu.be/iiCBYAP_Sgg?t=57
  - pdpi 5y ago
    The model in the video is this one I think — https://www.ifixit.com/Teardown/MacBook+Air+13-Inch+Retina+2018+Teardown/115201 https://www.ifixit.com/Teardown/MacBook+Air+13-Inch+Retina+2... (Video mentions 2019 model, which is a minor revision based on this)
- HPsquared 5y ago
  In a way it's possibly more efficient without the heat pipe - the cooler is directly over the CPU in this design, and can be quite large due to the way it's packaged (though it has to be thin). The downside is it's harder to get decent airflow over the fins. The casing is probably designed to direct the airflow, but I'd have to see all parts together to figure out how this works. EDIT: the lower case appears to have some ducting on it, see this example: https://www.ebay.co.uk/itm/324259489798 https://www.ebay.co.uk/itm/324259489798
  - slezyr 5y ago
    That's a very questionable system. It needs to be completely sealed except for intake to work properly.
    - Applejinx 5y ago
      Correct. It needs to be completely sealed. You can't take the back off the laptop and have the cooling system function, the case is part of the cooling ducts. Provides for heat dissipation over broader surfaces. This is normal.
pokot0 5y ago
Because it helps gets more views on YouTube which is the only thing he is after. Him patronizing the thermal design of Apple computers that way is pretty funny, ngl.
- slezyr 5y ago
  It's really funny because he is correct, that fan does nothing. There is no heat pipe connecting CPU and fan.
  - pokot0 5y ago
    Idk, I am no expert but I tend to believe that a design that is shipped to millions of customers and only a handful report problems is probably designed better than what the average youtuber or forum commenter can assess. Apple is known to remove elements from their design in order to optimize. That big and heavy heat pipe seems like a perfect element to remove. And maybe it is a mistake. That happened before and they iterated over it and turned the design into an advantage most of the times. Judging and say "does nothing" is very naive in my opinion and I am pretty confident that everything in that designed is planned pretty accurately.
    - slezyr 5y ago
      Cool, but why does a new and more power-efficient M1 laptop has it[1], and it's much bigger than this one? Apple is also known for not admitting its design failures. 1: https://www.zdnet.com/a/hub/i/2020/11/20/ab77bd9b-edc0-419f-aae5-bc14ea000bf6/2020-11-20-08-11-01.jpg https://www.zdnet.com/a/hub/i/2020/11/20/ab77bd9b-edc0-419f-...
      - foldr 5y ago
        The M1 MacBook Air has no fan, so you can’t really compare its cooling design to the previous MacBook Air. Given that it’s fanless, it would hardly be surprising if it had bigger passive cooling devices. The idea that a cooling fan needs to “blow on” the thing that it’s cooling is just dumb. As long as the path from the fan to the CPU is sealed, it makes no difference at all how far away the fan is. (Think of a wing being tested in a wind tunnel. The fan that’s making the ‘wind’ doesn’t need to be placed right up against the wing for this to work!) A heat pipe gives you more layout flexibility because it lets you place the fan somewhere where it can’t generate airflow directly over the CPU. Given that a heat pipe can’t be 100% efficient at transferring heat, a design with a heat pipe is actually less efficient, all else being equal.
ben509 5y ago
He's not understanding that in the normal operating environment for Macs, there's an additional fan he's not seeing. The person who bought it.

There should be a cooper pipe between the CPU and cooler like this one[1]. Seriously, WTF? Where is it? 1: https://i0.wp.com/lemmymorgan.com/wp-content/uploads/2020/01/Heat-pipe-of-notebooks.jpg https://i0.wp.com/lemmymorgan.com/wp-content/uploads/2020/01...

DougBTX 5y ago
Here's an example teardown: https://guide-images.cdn.ifixit.com/igi/iUejB4OfKlPD4Fex.huge https://guide-images.cdn.ifixit.com/igi/iUejB4OfKlPD4Fex.hug... The heat pipe is the part just above and to the left of the fan.
- slezyr 5y ago
  That's a different model, there is no heat pipe in the video see https://youtu.be/iiCBYAP_Sgg?t=57 https://youtu.be/iiCBYAP_Sgg?t=57
- pdpi 5y ago
  The model in the video is this one I think — https://www.ifixit.com/Teardown/MacBook+Air+13-Inch+Retina+2018+Teardown/115201 https://www.ifixit.com/Teardown/MacBook+Air+13-Inch+Retina+2... (Video mentions 2019 model, which is a minor revision based on this)
HPsquared 5y ago
In a way it's possibly more efficient without the heat pipe - the cooler is directly over the CPU in this design, and can be quite large due to the way it's packaged (though it has to be thin). The downside is it's harder to get decent airflow over the fins. The casing is probably designed to direct the airflow, but I'd have to see all parts together to figure out how this works. EDIT: the lower case appears to have some ducting on it, see this example: https://www.ebay.co.uk/itm/324259489798 https://www.ebay.co.uk/itm/324259489798
- slezyr 5y ago
  That's a very questionable system. It needs to be completely sealed except for intake to work properly.
  - Applejinx 5y ago
    Correct. It needs to be completely sealed. You can't take the back off the laptop and have the cooling system function, the case is part of the cooling ducts. Provides for heat dissipation over broader surfaces. This is normal.

pokot0 5y ago

Because it helps gets more views on YouTube which is the only thing he is after. Him patronizing the thermal design of Apple computers that way is pretty funny, ngl.

slezyr 5y ago
It's really funny because he is correct, that fan does nothing. There is no heat pipe connecting CPU and fan.
- pokot0 5y ago
  Idk, I am no expert but I tend to believe that a design that is shipped to millions of customers and only a handful report problems is probably designed better than what the average youtuber or forum commenter can assess. Apple is known to remove elements from their design in order to optimize. That big and heavy heat pipe seems like a perfect element to remove. And maybe it is a mistake. That happened before and they iterated over it and turned the design into an advantage most of the times. Judging and say "does nothing" is very naive in my opinion and I am pretty confident that everything in that designed is planned pretty accurately.
  - slezyr 5y ago
    Cool, but why does a new and more power-efficient M1 laptop has it[1], and it's much bigger than this one? Apple is also known for not admitting its design failures. 1: https://www.zdnet.com/a/hub/i/2020/11/20/ab77bd9b-edc0-419f-aae5-bc14ea000bf6/2020-11-20-08-11-01.jpg https://www.zdnet.com/a/hub/i/2020/11/20/ab77bd9b-edc0-419f-...
    - foldr 5y ago
      The M1 MacBook Air has no fan, so you can’t really compare its cooling design to the previous MacBook Air. Given that it’s fanless, it would hardly be surprising if it had bigger passive cooling devices. The idea that a cooling fan needs to “blow on” the thing that it’s cooling is just dumb. As long as the path from the fan to the CPU is sealed, it makes no difference at all how far away the fan is. (Think of a wing being tested in a wind tunnel. The fan that’s making the ‘wind’ doesn’t need to be placed right up against the wing for this to work!) A heat pipe gives you more layout flexibility because it lets you place the fan somewhere where it can’t generate airflow directly over the CPU. Given that a heat pipe can’t be 100% efficient at transferring heat, a design with a heat pipe is actually less efficient, all else being equal.

ben509 5y ago

He's not understanding that in the normal operating environment for Macs, there's an additional fan he's not seeing. The person who bought it.