I understand, but I'm not certain it's enough to make a difference in this instance.
My assertion is based on an experience last year. I was folding on the 560Ti and quite happy with 60C, but it was pulling in a lot of dust - folding 24/7 is merciless with dust. Had to clean it every week. So I bought Demciflex filters, custom sized for the SG05 side vents. Suddenly the temps are 70C and the 560Ti fans are over 2000rpm instead of the previous 1300rpm. Well no problem, I thought, I have 2 case fans in push-pull which are only doing 900rpm. I turned those up to 1500rpm, which should be now moving 4x the air volume of the case every second. Didn't make any real difference to any temps, not GPU nor CPU. I was confused but after a while I thought to reduce the GPU fans. Temps went down (but not much, 3C maybe). The only explanation can be that the Phantom fans were just as strong pushing one way as the case fans pushing the other way.
But at least the SG05 has side vents, even when restricted with filters. The FT03mini has none. So where is the cool air coming from except the AP141 underneath? Any fans fighting against the flow and you'll just get a warm air eddy or backflow.
Also check page 26 of the FT03-mini manual. "When choosing a graphics card, we recommend models that have fan blowing exhaust air to the rear slot, this will ensure smooth and efficient airflow within the FT03-MINI for maximum cooling performance."