In my case, I put a ASUS X5DIJ on the notebook cooler.
The thermal control in comparison with the previous temperature (over a period of about 3 hours), only a difference of -1.5 ° C indicated. So I test a little more detail.
1 day (8 hours) with cooling in the "Office normal operation" and 1 day without refrigeration in the "Office normal operation". The temperature difference was -2.2 ° C. What on closer viewing of the "cooler" is not surprising.
The unit is suited best as leg protection for people working on the sofa. The fan is extremely weak and "cools" primarily the underbody of the notebook. Due to the weak performance but also insufficiently.
Since the ventilation slots on the back of a notebook in any case are very small, effective cooling can take place only when you remove the bottom cover. And as the saying goes? "Try making kluch ..."
Ground cover removed, turned notebook and the temperature observed. Lo and behold, the difference was incredible from -10 to -15 ° C.
Now the use of a notebook without soil cover is of course not without. But if you follow the idea that accumulates more heat under the cover of the notebook, as this can reduce "notebook cooler" I let I prefer a larger air vents installed to use this as a useless "energy guzzlers". The 2.2 ° C reduction in temperature cause anything when accumulate under the cover 10-15 ° C. This thing goes back.
The asterisk is only for the pretty design.
For the real problem of too high a temperature, there's now a very simple solution. The notebook soil gets an additional opening with Fanfilter. Then accumulates nothing, and that air can circulate.