I managed to install two i9 9900k monsters and be quiet! DARK ROCK PRO 4. In this case, use an ATX power supply. Surprisingly good breathability. Surprisingly, when the case is closed, the cooling is no worse than when it is open, and even the VRM temperature is a couple of degrees lower ! (see photo tests on a 30-minute render). To be honest, I'm happy as a boa constrictor ! True, I replaced the 140mm fan with my be quiet! and removed all the rudiments (mounts for the HDD are clearly not needed in our time, M2 SSD rule !) And I recommend using a PSU with a removable cable with this case. Otherwise, a normal-sized video card will not install.
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