I noticed that 1 fan was not spinning (rear fan) under any load condition or when I toggled manual fan control and then set them to 100% in MSI Afterburner. That was a few weeks ago. Now the rear fan is spinning but the other two are not. Same issue ...

Does anyone know if there would be any compatibility issues with having 6 6TB HDD's used in a RAID 5 on the Rampage III Extreme? I don't think there would be just doesn't hurt to check.Win 8.1Latest BIOSRAID 5 would NOT be boot drive.