Make sure you mount the Tuniq properly. Make sure the fan is blowing out towards the exhaust fans. As I discovered the hard way, this can make a difference of 5-7 * C.
The 'Tuniq' is read right side up and the fins pointing towards the front of my case.
According to the BIOS, the Tuniq is running at ~400 RPM and the system fans are running ~1100 RPM.