Not sure if I've heard of Intrex but I'll have to check. :) I have a lot of fans b/c I've had cooling issues in the past, plus when I bought this case, it came with them all in the price so I figured heck, more cooling the better. Even now it still gets a tad warm on those nice SE NC summer days. :) I love heat, but my computer doesn't! For some reason though, it seems like Wilmington lacks a fair amount of computer hardware stores...it's kinda weird. I've yet to really find a good one in the phone book. MD