Why is the picture different?

Question

Iron

I bought another monitor of exactly the same model for my ACER ET241Ybi monitor (it is less than a year old).
I inserted one monitor into the HDMI port of the GeForce 1060 Ti, and the second into DVI-D. In the monitors themselves, both outputs are HDMI.
In the monitor menu, ALL settings are the same.
Why are the pictures different? Where a little lighter - DVI and an older monitor. Has it burned out in a year?

In the NVIDIA X Settings, both Color Range - Full

Answer 1

And swap the cables in places, find out if it burned out or not.
PS Just now I noticed that the HARDWARE has some kind of Linux distro.
Check in a normal system or in another distribution (you can in Live), mb drivers are buggy.

Answer 2

Even if it's not a matter of "burn-in", then theoretically the version of the monitor's firmware or the revision of the monitor's board may differ, the parameters could be adjusted in the firmware, and different versions of the circuit or components could be used in the boards.
If this is important, then you will have to calibrate, usually calibrators have the function of bringing one monitor to another, so that both show the same.
Has the monitor been calibrated before? Maybe the old calibration is tied to the monitor, and the new one is still without calibration.