Thermaltake ProWater 880i Review
 

At idle and stock settings, Thermaltake's kit fights for the number one spot against the recently reviewed kit from AMA. Cranking the fan speed to the maximum enables it to shave off that degree and take the lead. Under load, the ProWater has a solid advantage even over the custom water cooling. With the clock speed increased to a moderate 3.33GHz, Thermaltake once again wins at idle by a fair margin. It's only when under load that fan speed makes a noticeable difference, where moving from minimum to maximum takes 5 degrees Celsius off. At those settings, it can't quite keep up with the custom water cooling loop, where it loses by a one to six Celsius, depending on fan speed.

http://www.overclockersclub.com/revi...prowater_880i/