The Test System and Thermal Results
I would first like to thank HIS, GIGABYTE , InWin and AVADirect for supplying products for me to test with.
Testing for the CPU coolers is done with the use of RealTemp to ascertain temperatures, Intel Burn Test to deliver the load to the CPU and CPU-Z to verify the CPU speed and the voltage being used in Windows. All of the testing is done with an ambient temperature of 24.5-25°C and humidity is maintained to 35% sometimes less.
For the "stock" runs, it's more of a plug and play setup where the PWM of the motherboard is in control of the fans speeds for both the idle and load results. Speed Step is active and the processor idles at 1600MHz and loads at 3500MHz for the stock settings. I also set the memory to run at 1600MHz for stock. As for the overclocked runs, I load the CPU at 4.5GHz and idle results are obtained with 7.5V to the fans while the load run is set to deliver 12V to the fans. This allows me to gauge the lowest and highest fan ratings for my charts.
For this specific test I connected the pump power lead to the PWR fan header on my motherboard so that the pump always was spinning at its fastest, with the only changes being in the fan speed. At this power level the H60 head unit's pump is spinning at 4500 RPM. The SP120L fan was then connected to the CPU fan header so that I could have control of the fan speeds.
As the stock clocks sit idle and the motherboards PWM having control of the fan we got 27C with the fans spinning at 1168 RPM. Once the overclock was applied and the fan running at full speed we were able to get down to 26C at that stage.
With the stock clocks applied and IBT running strong, the temperature got up to 48C, tying with the Thermaltake Performer. Once I reapplied the overclock to the processor and let IBT do its thing, I found the highest temperature I hit was 69C, just slightly edging out that Tt unit.