Prospect buyer, G5 5587 thermal throttles?

Hi all,

I got my brother the Inspiron 7577 with the i7 and 1050ti a couple of months back before the G5 came about in the country, and from what i've seen it was already pushing the limits of the laptop's cooling even with a cpu undervolt.

Now my other brother has his old laptop's CMOS chip fried (afaik and idk how) so now he's looking to get a new laptop as well and asked me to pick one for him, so naturally i go for the budget lappies out there and it's a choice between the Legion Y530 with the i7 and 1050ti or the G5 with the i7 and 1060 max-q.

But idk how well the cooling will be on the G5, it seems like a core count, core frequency AND GPU upgrade might be too much to handle without some sort of thermal/power limit throttling during sustained loads (he's an architect who's gonna be doing lots of graphics rendering and modeling, not to mentioned games here and there).

I plan on undervolting the cpu on that as well as raise the whole laptop about 1cm using rubber feet at the four corners of the laptops where the built in feet are installed, but idk how well that'll work until i try, that's where you guys come in, are there any problems of the sort on the G5?