To expand the topic of airflows, I want to show you a couple of interesting diagrams that show the CPU temperature graphs by the following sensors: CPU (red), mainboard’s near-socket PWM sensor (orange), and chipset (violet). The Scythe Ninja is first:
And now the Thermaltake Big Typhoon:
I had to group the temperature graphs due to the image width limitations. These results were obtained in a system case and with the same 120mm ~1450rpm fan used with both the coolers. This test was performed on an Intel Celeron D 351 3.2GHz overclocked to 4.1GHz with a voltage increase by 0.1V.
Easy to see, the Thermaltake Big Typhoon not only cools the CPU better, but is also more effective at cooling the mainboard near the CPU socket, which is quite an important thing. It is crucial that the mainboard’s power elements are cooled properly if a dual-core processor is used. That’s why coolers that direct their airflow towards the mainboard look preferable as ensuring higher overall stability of the system. I want to note that the Scythe Ninja’s fan was attached a little higher than the bottommost plates of the heatsink because the memory modules prevented me from placing it lower. If the fan is set lower, the temperature reading of the PWM sensor is going to be lower, too.