Mac OS 9 Discussion > Mac OS 9 on Unsupported Hardware

My experiences thus far with multiple machines.

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Jubadub:

--- Quote from: ssp3 on February 15, 2024, 07:03:03 AM ---It's the controllers that run hot and produce extra heat, not so much flash memory chips ;)

--- End quote ---

Nice, those are cool and educational pictures. It seems the actual memory modules are also running hot, though (53 to 60-ish °C), although, as you pointed out, indeed less than the controllers.

I forgot where I read it all from, but apparently that heat present in the memory modules is very important to retain the data. I guess the controllers run even hotter for entirely different reasons, though. I have no idea if there could be any issues, were the controllers to run cold.

ssp3:

--- Quote from: Jubadub on February 16, 2024, 08:42:13 AM ---I forgot where I read it all from, but apparently that heat present in the memory modules is very important to retain the data.

--- End quote ---

This issue is quite complex



When it comes to unpowered storage, the opposite is true.




https://www.ni.com/en/support/documentation/supplemental/12/understanding-life-expectancy-of-flash-storage.html#section--1379857599

https://www.atpinc.com/blog/ssd-data-retention-temperature-thermal-throttling

https://www.sciencedirect.com/science/article/abs/pii/S0026271418305079


Since controllers consume most of their power and get hot during write operations, keeping flash memory chips, that sit near by 'warm enough' is not a problem. It is the heat that gets generated into surrounding air that can cause problems like it is in the case of the above mentioned 12" PowerBook G4.

Increased power consumption of the SSD drives compared to original rotating HD drives is another, often ignored issue. I've touched it briefly here: http://macos9lives.com/smforum/index.php/topic,6804.msg52089.html#msg52089

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