What kind of improvements do you see from adding a 2nd fan?
I'll go out on a limb here and say: It runs cooler.
How cool? I have also install 2nd fan. I have found one same as orginial...
After installing, hot air is pulled by 2nd fan, but from management page, show same temperature >:(and the rpm of the 1st fan become higher..., form 1900 to 2200?