I did not install that Catalytic utility as I recall it was quite large. I tested the 5450 with the Furmark. The hairy doughnut thingie rotates slowly and spasmodically, no doubt due to the wimpy GPU. The temperature stabilized at about 54 °C in the extreme burning mode. At idle the GPU is 40 °C at an internal case temperature of 30°C and room temp of 25°C. I think that should be fine for good life.