post #11 of 11
Let intake fans push air out of cases

2x front intake
Remove HDD cages if possible
1x bottom intake
1x back exhaust
Raise case 20mm for better airflow to bottom fans.
Remove unused PCI slot covers from back

My modified Define R2 is raised 30mm with 3x TY-140 intake fans (2x 140mm front and 1x bottom) PWM controlled by CPU fan header PWM signal. Fan speed / airflow increases and decreases same as CPU cooler fans. Idle 24-28c@700rpm; full load 44-49c@950-1050rpm. Air temp inside of case is 2-3c warmer than room