Pancho  wrote:
> On 11/11/2020 12:09, A. Dumas wrote:
>> Every process can use 4 (I think it's 3 in practice?) GiB. In
>> Chrome/Chromium, every tab is a separate process. So if you regularly
>> open a lot of tabs with huge content ... then 8 GiB might be beneficial
>> even on 32-bit RaspiOS.
>
> Do you have a ref? I thought 32 bit kernel meant it could only map max 4
> GB ram in total, shared between all processes.

https://en.wikipedia.org/wiki/Physical_Address_Extension
https://www.tomshardware.com/news/raspberry-pi-4-how-much-ram (look for the
"Raspberry Pi 4 B 8GB: The Ultimate Pi" paragraph)

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