My thought is that more RAM is going to require more current. The 4GB
Pi4 already runs hot. More current means more heat. More heat
requires additional hardware to mitigate it. The case with fan to
which I posted a link is the best currently available IMNSHO, and it
doesn't require any GPIO pins or program to operate, unlike the
Pimaroni FanShim which is also a good cooling option.
On Sun, 31 May 2020 15:16:04 -0400, "John Spoonhower"
However, it's not clear how this relates to the additional memory