Thermalright ultra 120 extreme

hi guys not doing push pull set-up not sure if i should put the fan for exhaust or intake.

If I'm running just 1 fan, I always set it up to push air into the heatsink. You have exhaust fans on the back side of your case to get rid of the warmed air, so you will do more good pushing the cooler air into the TRUE than trying to pull it through the heatsink.

On a single fan setup it will perform best in a push (intake) setup.