Hudson92:
Well using one of these invalidates the warranty afaik. They dont work and damage the system, the idea is completely flawed and dont even see how these came on sale. Think about it, shove 2 fans over 2 fans and what do you get? No change and i bet these spin at a different RPM which destroys the airflow from the internal fans and maybe the fans are blowing air into the system? If they do then that is pumping the hot air back into the system and fighting the internal fans.
Dont buy this crap product, im not voting.
They work by assisting the internal fans to run at a faster rate - airflow is still the same way (i.e exhausting air). In the same way you can blow onto a fan to make it spin, these work in conjuction with the airflow currently in place.
The trade-off is awful tho - the extra noise means you'll want to hide it away somewhere which defeats the purpose since it won't have ventilation.
Q-Tec:
It is the DVD drive that makes all the noise, not the fans ... and (AFAIK) most of the problems with over-heating 360's are those that didn't allow theirs to be properly ventilated.
Well overheating 360s WILL be down to lack of airflow, but has little to do with the RRoD.