I have an Accelero X2 on my x1900gt, idles around 49 C. Using rivatuner I can set the fan speed to 100% (can hear virtually no difference), but temps drop to 42. Is this safe or will I wear out my fan in no time? Also is rivatuner fairly ok as a program? I am used to using ati tool, but does not find my fan speed (neither does tray tools). Also can you run ati tool to use the articfact test, while adjusting clocks with rivatuner?