Running games at higher res than monitor?

Soldato
Joined
19 Nov 2015
Posts
4,905
Location
Glasgow Area
I've heard this is good, but I just cant get my head around how it works??

I'm thinking I can use this for Rust. Even on fantastic graphics i'm always well above 60fps. So should I run it at 1440p on my 1080p monitor? I just can't fathom how it would look any better but willing to give it a try if I have the frames to do it.
 
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