Thanks for the reply. I attached the 2nd fan to the TX3 shortly after I built the PC, so I dont really have anything to compare it to. How much of a difference did you notice in temps with 2 fans vs 1? I'm just trying to figure out if it's worth going through the process of comparing the 2 setups. If it's only a few degrees, then I'll leave it as-is. But if you think it could make a substantial difference (>5 degrees) then maybe I'll look into it. Thanks again for your opinion.