What has been your best experience in keeping an xbox 360 laptop cool with space in mind. I have very little room in my build and would not like to increase the thickness of my project. I had used a stock heatsink

cut less wide to fit on the CPU while using the next generation
for the GPU (I might have those mixed). I put some 12v Fans on top of both and can play for about 30 minutes without a case before it over heats. This is the last bit of my project before finalizing a case design and putting it in. I have ordered the newer model heat sink

in hopes that it will work better. Any experience would be greatly appreciated.
Fish