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I know it is not the main topic but. Is this just a funky fan setup or what is happening here? I have the same cpu cooler and I’ve build mine horizontally to blow out of the back. This setup looks like it is pulling from the air from the GPU.

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It's not the setup of the author, it is just a stock photo.

https://unsplash.com/photos/xV3CHzfhkjE

I wouldn't use it as a build guide.

There is the mention of a server grade fan control in the article, and it looks like this is a workstation / server board.

I've seen the sockets on those boards being "90° off" in comparison to normal AM4 / 1150 / 1200 Socket motherboards which lead to those orientations.

I think it’s a workstation fan on a server board. The CPU is rotated on server boards vs workstations. When the fan matches the board it always blows to the back. RAM modules follow the orientation of the CPU. Parallel to the airflow on server boards, perpendicular on workstation boards.

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