Step 10: Afterthoughts and Shoutouts
NOTE: There is word on the interwebz that Microsoft will ban you from Xbox Live for installing new fans. You have been warned.
Since there's no room to easily add a fan to the GPU heatsink, the next best thing you can do is optimize airflow. While the 360 has dual exhaust fans, most of the airflow goes to the CPU heatsink. By adding cardboard to the fan shroud and covering the top of the GPU heatsink as depicted, you can improve airflow even more, as you've just devoted a whole fan to it.
And if you really don't like the stock fans in the 360, you can always buy 3rd party replacements. There's Talismoon's Whisper brand of fans, with LED accents. I can't say anything on quality, as I haven't used one. But they seem to be quite popular. They can be found at http://www.Divineo.com .
And now onto the shoutouts.
Thanks to Google first and foremost. LOLz.
Xbox-Scene.com and it's members, for their endeavors in resolving this issue.
RBJTech for the idea of adding cardboard to the fan shroud.
Thanks to both those sites for all the info that I mixed and matched to create this tutorial.
Oh yeah, and a special thanks to Cheerios for providing better airflow than Microsoft could.
-Dr. Professor Jake "Biggs" Turner