I don't think it's fan rpms, I can see and hear all the fans but I'll double check.
I have two fans facing in and two fans facing out. The fans on the power supply (2 total) are adjustable so I have it turned all the way up. The CPU fan, is also adjustable and turned all the way up.
I just felt around my video card and it didn't seem to overly warm. But when I touched my CPU heatsink, that was almost too hot to touch.
I downloaded a program called "speedfan", it shows temps and fan rpms. The only problem is figuring out what is "temp1", "temp2" etc....