ok i set it to high manually and yes, i can hear it over my breathing. i worked out that anything i do that creates enough heat to actually warrant full speed, the speakers or headphones far outway the minor noise from the fans
for 3dmark results look at the 3dmark results thread, but to compare it to something? hmm i will just say i can barely hear it over my own breathing. I dont even notice when they go on full speed any more....maybe im just wierd.