The cable management and air flow of the 750D is pretty good. I was using one for a build but it was just a bit too big. The top vent meant that the acoustics of the case weren't great. I tend to run a lot of fans of keep the RPM that's needed down and thus noise. Still, the room which this computer is in is a study room and it ended up being too noisy. Keep in mind this is a gaming rig though, so there's a lot of hot things in there to keep cool.
I should have a 750D Air Flow for sale in a bit if you're still in the market then. Let me know.
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