GPU fan and PSU fan intakes face each other; bad idea?

[notsmart]

I have a SLI setup, and a bottom mounted PSU. The lower GPU is maybe an inch and a half (38mm) apart. Is this a bad setup because both fans would be "fighting" for intake air? Or is it okay?

 

[clutchc]

Not ideal. Bottom mount PSUs generally work best if mounted so the fan is pointing down (assuming the case is designed with an intake vent for the PSU).

 

[notsmart]

Not ideal. Bottom mount PSUs generally work best if mounted so the fan is pointing down (assuming the case is designed with an intake vent for the PSU).

Is it absolutely bad though? It has a led fan, which makes me want to mount it upwards.

 

[clutchc]

Not bad. Not ideal. As you suspect, the bottom card and the PSU will be fighting for the same air FLOW. There's plenty of air for both, but the direction of air flow may be towards the more powerful fan. However, the bottom card is usually idling and doesn't get warm until heavy gaming in SLI aware games. If you are able to monitor your card's temp during those demanding times, you can tell if the situation is critical or not. Monitoring the PSU temp is a bit more difficult.

I suspect you will be fine, however.