Someone just posted this like two days ago <--- nevermind, I believe you saw that one actually ,about stacking fans. A few months ago I told people to try it, but a lot were skeptical.
I had it on my previous case since like september as the rear exhaust and before the rear exhaust I had it in the side like yours.
People told me I was crazy when I posted it, now people are posting it like it's the new craze or somethin
I also noticed a decent decrease in temps from it at the time, dont have it on the new case though