"I have to point to a problem you expose yourself when you add additional front fans. To ensure the proper airflow these front fans have to insert cold air into the case and back fans to take it out from the CPU surface. Unfortunately we do not live in a dust controlled Network Operation Center environment. In several days it's enough dust into the case to affect computing reliability. For this problem you have two solutions: to clean the case very often or to add some kind of dust filters."
FULL STORY @ PCHARDWARE (http://www.pchardware.ro/Reviews/Antec/antec_p1.shtml)