Gameguru Mania

[ggrobot]

The best GPU orientation is an interesting topic to discuss but GPU orientation tests are also hard to conduct due to case and cooling limitations. That's where the Lian Li O11 Dynamic Evo comes in because it allowed us to test FIVE different GPU orientations like vertical vs horizontal and also upright, upright rever

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[Csimbi]

I didn't watch this video, but use your head, people.
Where does warm air go? Up!
So blowing it in any other direction is pointless.

However, the point of active cooling is more about drawing heat away using fresh air than the actual orientation of the components - and you can do that efficiently even when your GPU blows downwards.
You want to suck air in at the bottom of the case. Through AND next to the PSU, and then use that air to cool the GPU as well.
Then, you will want to blow air through the HDDs/SSDs to the memory modules and the CPU.
Push the warm air through the back - ideally, close to the GPU and above the IO panel - AND through the top (a 180-220mm fan).
The GPU often times 'splits' the inside of the case in two, accommodating these two major cooling paths nicely. Putting the GPU before or after the CPU in the cooling chain is a very bad idea. Just don't.
You will get great air cooling this way, no need to waste your time on schtoopid videos.
The next step is finding the right rotation speeds for your fans. You will want to balance noise and heat. You will want to stress-test both CPU and GPU at the same time to get the highest heat possible inside the case. Play with the fans speeds on the four sides while watching the CPU/GPU temps until you are happy with the heat and noise. I run them all at the lowest possible speeds, barely audible.