Question about ASUS Rog G20cb

You only notice that when you play 4k or play at 1440p. But you pay much more to have about 30 fps more.

Yes, you can tell if you know about it. No, you don't notice that if you have no idea.

You can compare it roughly with a Ferrari and a Porsche (in terms of speed). The Ferrari, for example, drives max. 300km/h, the Porsche max. 250km/h. However, if you only drive at a maximum of 200 km/h (on the German autobahn), it doesn't really matter, because both can drive at 200 km/h.

Counter question: What games do you play and at what resolution (what kind of monitor do you use)?