have you run a program like speedfan to see what speed your fans are running at? You can get it
HERE - http://www.filehippo.com/download_speedfan/
I would check those, and make sure that your bios settings isn't throttling them back. If they're running full speed - and tell us what that is and the model and make so we can find the cfm, you might need to get higher rpm with more cfm fans, but they're only going to do so much if your room is hot.