Best PC Case for Optimal Cooling?

The Lian Li Lancool 207 is highly praised for its cooling capabilities, but be cautious about its design; the PSU is located at the bottom front, which can cause issues with longer power supplies and thicker cables. It generally performs well, making it a solid choice for thermal performance. The Lian Li Lancool 216 and 217 are also strong contenders, though the 217 isn't released yet. Just keep in mind that the NZXT H6 Flow, while decent, doesn't perform as well as the Lian Li cases when it comes to keeping things cool.

I see your concern with heat – my previous build was in an NZXT H510, which is known to trap heat. The best case for you might be the Antec Flux (Non-pro) if you're looking for effective cooling and not too worried about aesthetics. It's worth noting that case fans play a significant role, so whatever you choose, consider adding some high-quality fans if they aren’t included.

Honestly, all these cases have great potential for cooling. I would say the Lian Li Lancool 207 stands out among the options. It includes five pre-installed fans and has a front mesh design that promotes airflow. The Lian Li Lancool 216 is another good choice because it also has mesh front panels, which help with air intake. Just make sure to set up your fans correctly for optimal performance!