Slower Fans For E6300 And E6400 Series
The thermal dissipation loss is virtually proportional to the core frequency. Simply put, the higher the CPU frequency, the higher the resulting thermal power loss. The reverse is true as well, though, meaning that CPUs with lower clock speeds require less elaborate cooling.
Box cooler of the E6300 and E6400 series
This is why Intel ships its Core 2 models of the E6300 and E6400 lines with a modified box cooler. Although it shares the same design using a copper core surrounded by aluminum cooling fins with its high-performance siblings, it sports a different fan. Its motor is only a 2.4 watt model, compared to the 4.7 watt version on the more powerful coolers.
The back of the box cooler with preapplied thermal compound.
As a result of the less powerful fan motor, the fan speeds are also lower. This model reaches a maximum speed of 1740 RPM, while its idle speed is 820 RPM.
This cooler comes with a high-speed fan...
...while this one sports a lower-speed model.
Such a pared-down model is no longer able to cool the quad-core processor. Under full load, the CPU temperature rises to 92.8°C, which is just below the throttling threshold. On the plus side, the cooler never gets louder than 40 dB(A) thanks to its slower fan, by no means loud enough to become annoying.
|Noise||40.2 dB(A)||39.2 dB(A)|
|Fan speed||1740 RPM||820 RPM|