I had an issue with my washing machine a couple months ago and it decided to leak all over the laundry room floor. Well, unfortunately, due to my just moving into a house, I have been storing my 5600x and 3070 FE gaming computer down in the basement and… well, it ended up with detergent filled water all over it. Fortunately, it was insured, so I suddenly had a nice budget to play with, and as such treated myself to my dream GPU — the MSI Suprim 5080. Being as it's my dream GPU, I did a quick concept SketchUp and once I was happy with the design, I got to work. Total dimensions are 96in wide by 36in deep by 1.5in thick, so she a biggun.
Things of note: I modified the EZDIY-Fab GPU bracket I found on Amazon in order to display the GPU more nicely, since I hate upside-down letters and hate having to choose between viewing the beautiful front fans and the backplate. You can see in the second picture that I found the "optional" mounting angle to be ideal, but I also had to drill an additional hole on the opposite side and tap a machine screw into it to prevent sagging. I screwed the modular front I/O panel into the underside of the desktop as pictured, then after buying a 19-pin USB 3.0 splitter, I routed the cables to the mobo. Before placing the case inside the desk, I installed some waterproof weather stripping on the edges of the butcher-block to hopefully mitigate any spills that may happen and prevent liquids from seeping into the case; I never want to deal with that again, lol.
As an aside, the only software which seemed to properly "discover" all of my hodge-podge of brands (Lian Li Fans, ASUS Mobo, MSI GPU, Corsair RAM, etc…) was OpenRGB. Take that as you will.