bazoo :
ZENprime :
I recommend you use VSR on amd or DSR on nvidia ; They both make you run games in higher resolutions than you native screen's resolutions . so you can run 1920x1080 on 1600x900 .
The cpu is good for 1600x900 ; however the more smaller resolution the more you put work on your CPU so please run 1920x1080 on your 1600x900 using VSR or DSR
What is vsr or dsr?
It is a feature on amd 7000 / r 200 / r 300 series
or on nvidia 900 series
It allows the GPU to render the game in a higher resolution (1920x1080 for example) then it downscale it to your monitor
So you will play and see the game in 1920x1080 rather than your monitor 1600x900
It does not make you buy another monitor to play in 1920x1080