I Had SMC, then i was recommended a different fan controller, so i uninstalled SMC and tried this other one (Cant remember the name, but it was a graph, which would actively adapt, so you could set it to ramp the fans up quicker than OS X normally would) And i never noticed much difference, so tonight i installed SMC again, and now when i choose full, it picks upto about 5000rpm, then drops to ~2500rpm. Im pretty sure this other program is the culprit, but what is it?