IANA science person or wind expert, but I would test what effect removing/disabling the bottom intake has. Right now it could be pushing fresh air up and diverting it somewhat before it gets to the GPU intake (hard to say for sure based on just the 1 photo)
You need a 6th fan /s
Hmmm…yes. Maybe I could mount some 10mm raspberry pi fans in some spare gaps
IANA science person or wind expert, but I would test what effect removing/disabling the bottom intake has. Right now it could be pushing fresh air up and diverting it somewhat before it gets to the GPU intake (hard to say for sure based on just the 1 photo)