"Too much airflow" video idea of force feeding even more air into GPU
From recent Jay's video where he was trying to feed more air into the GPU. I was facing similar issue in my case where intake fan airflow would just be colliding at the blunt side of the graphic card creating turbulence and making air difficult to actually go underneath the graphic card.
My case doesn't have any scoop at the bottom so I actually had to redirect air upwards in a creative way and I realized I can use same angled grills to push air down at the angle making it collide with blunt end of the GPU less.
Design I made is a bit more universal to redirect air exiting fans:
https://www.thingiverse.com/thing:6992843
On one of the photos you can see how bottom most intake fan in my case is actually mostly in the bottom compartment of the case shroud and the middle one is blowing straight at the blunt end of the graphic card.
I think the height and position of the bottom fan in Jay's case might actually be interfering with the air that is suppose to be exhausting from the graphic card because it's first hitting the blunt side of the GPU and then also interfering with the air coming out of heatsink of graphic card.
I think ideal design would be force feeding all the air from bottom fan into the graphic card, closing rear of the case grills below the graphic card IO and separate the bottom of the case from top of the case just below the graphic card exhaust (so, slightly below the line where air comes out of the graphic card heatsink. This way you force feed all the air from bottom fan into the graphic card, it's not rushing past and exhausting at the rear of the case and you're separating intake from the graphic card exhaust entirely. This way case bottom fan would entirely feed air exclusively into the graphic card and top case fan would feed it to the rest of the system and help move exhausted air from graphic card out of the case.
Also I like how I captured Jay's perfect face on the screenshot still :)