Have been using the kraken x60 for the last 3 years no problems with overheating but recently i have noticed something strange with the fans on it. The rpm of the fans when set to silent mode will run between 300-450 rpm, in extreme mode will run between 700-1000 and when in custom with a minimum curve set to 60% fan speed will run between 680-800 RPM, there has been no issues with overheating idle temps are around 20-23 Celsius while playing games and using roughly 20-30% cpu at around 40 Celsius however i did read the fan speed was meant to run at a minimum of 800 rpm which i can only achieve when in extreme mode or with my custom curve set to 60+% is there a problem with my cooler and if so what would be a way to fix it? also the fans are noisy from 600rpm onwards