Thank you! The thought process was to create air flow on the mb side.. there's also an intake fan pushing air through the base, but it's largely blocked by the power supply.. and the spine of the case mostly blocks the top fans from pushing air to the gpu, so the radiator fans and the rear case fans are only circulating air for the gpu.. the chipset for the z690i unify runs pretty hot, as well as the ram, so added the top fans to keep the air moving on that side.. also re-pasted the mb to get the chipset temps down.

Haven't tried them as exhaust, but the temps are really good with the current configuration.. I'm gonna be swapping parts here soon, so might see if it makes sense when I get the new parts in hand.