Question Eco mode vs Lower Brightness?

[isaacjibaja]

Hi everyone, well I´m using BenQ XL2411P monitor.
Within the settings of display there is an Eco Mode, I cant lower brightness more than default though.
And the other settings, the brightness is even lower than what Eco Mode allows me.
So which one settings saves more energy, and increase the life span?

 

[hotaru.hino]

The lower the brightness, the less energy it uses.

Regarding life span, as long as you're not running the thing near max brightness and take care of the monitor, barring any manufacturing defects, that'll be a non-factor.