Ha ha, well with the new AS, my CSI has so far always been infinite (Fan RPM = 0). Yep, my 16" MBP has a fan, but as a software dev, I am never bothering the GPU's all that much.
I do need a lot of RAM though. However, with the Apple requirement of pre-upgrading, plus the 400% Apple Tax applied, I would like to be able to determine EXACTLY how much I am and have been using, so that I can make correct purchasing decisions in the future, rather than throwing cold hard cash at an overestimated guess, or worse, underestimating and ending with an expensive, but inadequate flop.