|The fans used in this case are the slowest speed
available in a 70mm size. However, I prefer to run them even slower
for reduced noise. Stock fan speed is 3300 RPM, this speed is fine for
remote installations where noise is not a concern or where maximum
cooling is desired. Advanced users can easily make/modify their own
cables. Cable is just a standard fan extension cable with a resistor
installed inline to reduce the current to the fan.
Note: There are many variables to optimum fan speed. You may want to run the fans faster with a hot video card.
A cool running system can run the fans at slower speeds. For quiet cooling of your Radeon, see the
Recommended fan speeds:
00 ohm = 3300 RPM (>3 GHz)
33 ohm = 2500 RPM (2.8 - 3 GHz)
47 ohm = 2300 RPM (2.5 - 2.8 GHz)
68 ohm = 2000 RPM (2.0 - 2.5 GHz)
82 ohm = 1600 RPM (1.8 - 2.0 GHz)
100 ohm = 1300 RPM (<1.8 GHz)
For lower noise, slower speeds can be used. Get a
few sizes to see what works best in your system.