Well i have these two 120 antec trio blue LED fans that i use in my cooler master CM690 case as exhaust at the top. No fan controller and they were connected to the 4pin power connector. Man these things were so noisy and vibrate that i could feel it in my bed and in the room.
But all i did was take four pipe washers like what you put in the water tap when they are dripping and boom no more noise. so i am here to tell you the washer or grumits works.
AMD 64 7750 X2 2.7GHZ
XFX HD 4770 DDR5
2x2GB DDR2 800
320GB Western Digital SATA 7200rpm drive (1TB External)
24inch ASUS LED display
Antec NeoHE 650W Power Supply
Cooler Master CM690 case Black
Windows 7 Ultimate 64bit edition