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Comment by andix | Hacker News Reader

My iPad Air with M2 can run local LLMs rather well. But it gets ridiculously hot within seconds and starts throttling.

I wonder if anyone has made a liquid cooling system for ipads / phones. Like, a sealed thing that seals onto the back of the device and circulates cooling water directly against the back surface.

A more whimsical method is to put the thing in a glass of water with the cord sticking out. :-)

https://www.reddit.com/r/EmulationOnAndroid/comments/1m269k0...

a sandwich bag would work wonders, then you could use ice to counter the plastic's thermal inefficiencies!

> First, in a watertight plastic bag and then in the water?

Was wondering, but this the most duct tap hacker solution!

Throw it in a Thermoplastic Polyurethane (TPU) bag and it'll be a pretty good long term solution.

As I discovered cooling down hardboiled eggs, it's better to keep a thin layer of moisture that cools the object via evaporation.

Something of this sort should keep the device moisturised:

https://www.thehydrobros.com/products/automatic-water-spraye...

0.2ml/s at its lowest setting looks like the ballpark of what's required to maintain temperature.

I have a small portable fan that I place under it basically any time I use it for any development work. It gets thermally throttled pretty fast otherwise. It's definitely the wrong machine for my needs but it's what I gotta work with for now.

You can buy a liquid cooled tablet.

https://onexplayerstore.com/products/onexplayer-super-x?vari...

ipad pro actually preforms fairly comparably according to geekbench

What about submerging it in mineral oil?

You're in luck. Lots of phone manufacturers also implement liquid cooling inside the phone too.

https://www.notebookcheck.net/Xiaomi-launches-new-mobile-wat...

Yeah, lets add more cost and complexity in a cooling system so instead of 1 token per second we get 2 tokens per second, all of the price of one graphics card that can do 50+ tokens a second.

Apple fans never cease to amaze me.

I think the vapor chamber cooling Apple's starting to use is something like that, no?

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