My Frio is idling around 2 Celcius lower than my old 92mm OCZ Gladiator at the moment (with fans on low), although it was only @ 40 Celcius after I logged out of Bad Company 2, which is about 4 or 5 celcius lower than my old cooler and much warmer ambient temps within my house.
Not too impressed with the idle temps, but I guess it's load temps that are important.