Who better to design a great case fan than the innovative and forward-thinking case manufacturer, InWin, Wait! Didn’t I do that introduction already? Today I have 2 new and completely different case fans from InWin, the Sirius Pure and the Sirius Loop. As 120mm case fans go, these are lookers with the performance to back it up. So, at the risk of humming that Michael Jackson/Bill Bottrell song: It don't matter if you're black or white. Let's see what we find.