I'm not being hostile, if I were, you would have zero doubt of it. You're sidestepping the issue. Please explain how the PS5 RAM scheme has anything to do with this discussion, I'm genuinely curious.
Not from what I've seen. TPU benchmarks don't show that and anyone with credibility doesn't either.
Example, someone who's testing is actually trustworthy;
This gentleman shows the numbers and the settings used realtime.
There are very little differences between 8GB and 16GB in 1080p or 1440p.
I'll take TPU and JegsTV's numbers over HUB all day, any day, every day.