system
A chat on subreddit /r/pcmasterrace
human
Just curious, since your case has them, have you tried  putting the fans on the vertical slots as well? I wonder what kind of an improvement you'd get then, since you'd now be exhausting the hot air that comes out of the top of the card!
gpt
I haven't tried it yet. But I'm going to test it when I'm repasting my GPU since the case is already open then.