The Test System and Thermal Results
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 1600 MHz and loads at 3500 MHz for the stock settings. I also set the memory to run at 1600 MHz for stock. As for the overclocked runs, I load the CPU at 4.5 GHz 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.
You will also see that the charts have been slightly adjusted. From now on I will mention the idle temperatures if there is something worth noting other than an average of twenty-five to twenty-seven degrees as the PWM controls and SpeedStep allow for almost ambient results in most instances. What you are now getting is a stock speed loaded temperature chart and an overclocked loaded temperature chart. To clean up the audio results, I also removed all of the fans that aren't on the thermal charts. If you want to compare those results to new coolers, the old chart is still available in the older reviews.
Considering what the GAMMAXX S40 was up against in this chart, I will say that it handled itself very well for its size, and you can see it will do very well as a stock replacement cooler. In all honesty, the cooler places well above average, and that was a bit of a surprise to me as I expected it to perform a little worse than it did.
First glance at these results doesn't seem so appealing, but it does show that with 127W running through my 2600K, the GAMMAXX S40 is able to still keep the processor within the specs of what is too hot.
While we did reach a temperature of 83 degrees, this cooler is not designed for this, but you can see it will definitely keep you under the throttling level of the processor.