There's absolutely no way you'll get any idea on whether it's maxwell or pascal from looking at games. Like fatslob said clock speeds are much more important than wether it's maxwell or pascal.

These will be the slowest week in history of Nintendo lol.

I'd imagine more process heavy games require more efficiency and maxwell is less efficient than pascal architecture. Pascal can run like maxwell and even perform better than it at lower clock speeds. So both matter. It's all about efficiency for a console like switch and pascal can run cooler than maxwell at the same level clock speeds and perform better. If games that are very intensive are shown on switch,  I don't think we'd be able to gauge our final conclusions if it's based off a 2014 chip or a 2015/2016 chip but there would be telltale signs in the heat of the console and how loud the fans are.  I belive about a year ago it was reported that Switch would be using industry leading chips and Maxwell would also not fit that bill at this point. Unless, it's a highly custom maxwell, which isn't out of the realm of possibility. 

Hell, we'd really be able to tell by the price alone. Unless Nintendo struck a monster deal with NVIDIA to make a rumored $250 machine with pascal. 

Can't disagree with that kind of thorough analysis and an abundance of sources.

How are you going to measure the heat and sound of the fans? Heck, you won't even be able to accurately measure the resolution or frame rate of the games from the reveal. No, the only way is to have the console dissected.

I don't think it really matters what it is at this point. If the handheld mode is only 40% the power of docked mode is crazy tough to overcome even if it is Pascal.

Remembering that it's described as a custom chip its possible its basically Maxwell but may have some minor improvements that are also in Pascal. If they have stripped out the big/little arm cpu design and just left the big arm cpu's they have space to put something else, I suspect they may well increase cache to give full frame buffer size. Then how do you describe it when the chip is both improved on both Maxwell and Pascal in that regard.

Let's say effectively you have a gpu architecture that is 2/3rds Maxwell and 1/3rd Pascal how would you describe it? If your honest you would say Maxwell but then in doing so you negate the Pascal improvements. It's a custom chip probably designed between the mid-gen refreshe's of Nvidia's 2 gpu architectures.

What if Nintendo have designed it with full 3DS game compatibility for downloaded games not cartridges. Perhaps then there is a pica200 gpu in there too or part of the pica200 that not only helps run 3ds games but assists the main maxwell/pascal architecture for Switch games too.

When chipworks do a scan of the Switch main chip we may find it looks absolutely nothing like the Nvidia reference designs.

It could be everything.... EDRAM intégration... 512 cores...

It's 30%, not 40.

Really we are just one week from reveal so no need for some suspicious rumours at this point..