32-bit or 64-bit Zoom?
Zoom 32-bit came out first if I recall correctly and Zoom 64-bit came out a bit later.
I have used both and use Zoom 64-bit now on my two Windows 10 computers and my one Windows 11 Insider Computer.
Zoom does not use unnecessary memory that I can see. Little additional memory being used.
Zoom (on the computer) performs the same (within reason) 64-bit vs. 32-bit.
I use Zoom with Chromium Edge which has the same underlying engine as Chrome.
I suggest using Zoom 64-bit as 64-bit applications are now much more common.
Other: I have been converting most app I can to 64-bit (Office, Java, and all my other apps that have 64-bit versions).
On the Download Page, both 32-bit and 64-bit are available. If you choose to use 32-bit, it works as well as 64-bit (and vice-versa).