The A41 really surprised me. As you can see, these cases are virtually the same during the tests. When I first looked at this case, I admit that I thought for sure that there would be a much larger difference. I really expected a lot of heat build up in the A41. And the Ostrog GT has two 140mm front fans, so certainly it would have to be much cooler, right? Now I'm certainly not disappointed; just surprised. Neither the A41 or the Ostrog has side fans, and as much as I like side fans, having them probably wouldn't make much difference here. And while I have always had a weakness for cases loaded up with fans, perhaps I need to rethink my "More fans!" philosophy. Regardless, the airflow of the A41 is just fine.