My sister has a T580 with the 7th gen i5-7200u. Full tilt it runs at 60C after a repaste. My own pavilion x360 with the same i5 runs close to 90C. Let’s not talk about the 8th gen i7 version of said x360.
The 8th gen i5 and i7 CPUs just run really hot.
As for build quality, it’s fine. It’s no r500, but it’s built pretty well. Her laptop has been dropped a few times and the only issue it has is a fucked USB c power port (my only gripe is hard to replace USB ports).
nobleshift