Originally Posted by ehume;12940125
I would recommend these steps:
1. As others have recommended, flip the bottom front fan.
2. 3x5.25 fan is a great use of otherwise wasted capacity. I only have two 5.25 slots available, so I use 2x80mm fans there.
3. when you pull your PCI slot fan, remove the slot covers near the gpu so you can get some airflow past the gpu.
4. Internal fans should point back, not up.
5. Remove rear grill and rear fan. This will allow your cpu heatsink to breathe properly. You will still have case exhaust: see item 2 in my sig. Your rig will be quieter with one less fan.
Have fun. You're definitely on your way with some excellent ideas. Don't be afraid to experiment. Do different configurations and compare temps.
This are very good suggestions, and I reccomend you do at least a few of them to improve your airflow.
It is definitely a good idea to use your unused 5.25 bays for better airflow. The placement directly in front of your heat sink will help your temps. You can also get bay devices that hold hard drives and have fans on them, so you will be killing 2 birds with 1 stone.
Removing the rear fan and grill is also a good idea that most people think of. When you have a fan there that doesnt push as much air as your heat sink fan you are actually hurting your performance because your heat sink doesnt have anywhere to push air too.
As everyone has already said, flip the front fan. In general you want your fans to always be facing the same direction (front to back, bottom to top) otherwise they will be fighting each other.