system
A chat on subreddit /r/pcmasterrace
human
Looks good, but do you know that you installed the 40mm fans in the wrong direction?
You are currently taking air away from the GPU fans.
gpt
I tested both orientations. Exhausting air out of the case yielded the best results for me and as a bonus i don't have to add a dust filter.  
I think it works because it pulls air from the front of the case to the GPU fans for them to suck the air in.