With the low-RPM fans I have in it, temps are sub-par. The intake is rather restrictive, meaning that airflow is gonna be cut no matter what fan you put in it. There used to be a HDD cage in front of it, but I removed it and put it in the other cage above the fan to help improve airflow. If you could mod the intake, it would help a lot. If you have a GPU heatsink like mine, all the hot air from the GPU goes to the CPU heatsink before leaving the case. I got a 4-5 degree drop on load just from removing the side panel.
On the flip side, the thing is super-quiet. I wouldn't recommend it for a gaming build though.