I got my rtx 3090, and it's going to be a month before water blocks are out for it, so I decided to run it on air for now to make sure it works. I put it in then realized it's 2 inches longer than the Vega Frontier Edition which is already a very long card. I think Msi did it so they can have 3 fans, but the 3rd fan is all but useless. The first 2 fans cool the fins for the gpu and memory. The third fan has heat pipes leading to other components on the pcb, and it's sitting over a blank area of the board.
When I looked at the Vega Frontier Edition pcb more closely, there is a good 4 inches of just blank pcb with 2 capacitors and the 2 8-pin connectors. It's were the blower fan would typically fit. Considering it used hbm2 memory, the card itself could be very short, but the pcb is longer to accommodate fans and cooling fins.
It got me wondering why more manufacturers don't use this space better with more creative cooling solutions like the Fury X.