Cooler Master H500p with mesh front that has (front)2x 200 x 25mm Fan, 800RPM, (rear)1x 140 x 25mm fan,1200RPM
2 fans on the h115i pro (top)
worked fine for a year with this setup no changes. Max temp gpu would get under load would be about 70c.
I always clean the rig every 6 months, its clean no dust etc.