Hello neoberg,
I have the 3060 ti FE and also wonder about the fan configuration. The Founders Edition coolers of the 3060 ti and 3070 have different air exhaust outlets. The rear fan (fan towards I/O-shield) outlets are through the I/O-shield and the side of the card, which is upwards in a Dan-case-like sandwich configuration. The front fan (fan on the other side, towards the front of the case) pushes air through the card, but also has a side outlet, which is downward in a Dan-case-like sandwich configuration. This downward airstream will work against any case fan air intake, which I consider to be not good.
I have a case fan below the motherboard/GPU, but I think about changing it from intake to exhaust. I haven't tried yet to change the case fan for me.
Does someone else have any experience so far?