I have your X9DRI-F motherboard and SC732D4-903B mid-tower chassis. I called your technical support and they suggested I need to use passive CPU heat sink; however I have concern about CPU over-heat. Do you have any active CPU heat sink for the above chassis and motherboard model?
Sorry, I am afraid not, the above chassis and motherboard combination is not recommended. The motherboard is E-ATX form factor, the chassis is ATX form factor, if installing active CPU heat sink and fan then there is no way to push hard drive cage back, the hard drive cage will block from the CPU active CPU heat sink and fan. Recommend to use SC743TQ-xxx and SC745TQ-xxx series.