How many pins your fan connector has, you can put a 3pin on a 4 pin connection on your motherboard, and the fan will work, but the other way around won't work. The number of pins you need depends on your mb, I would just disconnect the fans and check what you have now. And your case uses 120mm fans stock, I don't know if you can fit 140mm that could give you some more airflow. Won't be enough fix your overheating problem tho... if you don't need to push the air through radiators/hdd bays I would focus on high airflow fans. If your front is quite full the you could use a static pressure fan in front and an airflow fan in back. I like to have more air in then out, you can check the cfm per fan to have an indication on what to get.