That’s easy. It’s hard to ignore something I had never seen. I had asked for links and you finally posted one. Thanks.
The person who kept arguing and insulting me was reporting kernel panics that he was blaming on mismatched RAM. He kept harranging me for not paying attention to all the videos and reports on that (still none that I can find) but never posted a link. He never mentioned the dual channel issue in his nonsense rants, BTW.
Dual channel is not an issue for me — ok, not for me personally since an iMac Pro is quad channel. For my education clients and their uses, the ability to have more apps open far outweighs an extra 500-1000 points on a Geekbench score. I can write a few pages on this issue but it’s a bit off-topic for this thread.
So, while I now understand the issue, I do not agree with the armchair experts who rely on Geekbench scores to form opinions. I feel that having 40GB installed per the 9to5 instructions is superior to the slight speed advantage of keeping the 8GB sticks in a drawer — for most users. There might be an advantage for gaming but I don’t do that and don’t pay attention to that world. My clients make their livings on their Macs as do I.
My heavy lifting is audio and AV. Although I really like the new 2020 iMacs for my school teacher clients and my wife, I’ve seen nothing that would make me want to give up my iMac Pro for one. If the iMP gets an option bump to the nano-glass and 8TB onboard, I’ll place that order. Day one.