@doyll49
There is no intake area on top of the case. It's completely blocked (see
Vortez).
Also I can't imagine the bottom of the case being even remotely an issue. Not only do most people not use 240mm AIOs - many will actually run the case without any floor fans, just like normal tower cases are often used without any top fans. But also, it's not like real cases are two dimensional cutoffs where the exhausted air can either go front or back. It'll dissipate all along the floor, only a very small slice of the exhausted air will go towards the front, and an even smaller portion will be circulated back in.
I drew what would be if a case has top vents / intakes.
Some of my arrows are as image is.
All arrows are to illustrate approximately how air flows compared to Corsair's lines that are a joke. At front they enter case at bottom (maybe below) fan / vent.
Backwards. Heat rises, they should take advantage of this. Here they are fighting it.
Seems counter productive to me.
Warm air rising is not possilbe in a case with fans.
"Heat rises" is a common misconception. Heat radiates in all directions. The air it warms expands becoming lighter. This caused the warmed lighter air to rise and cooler heavier air to take it 's place. But is only happens when there are no other forces involved. Even a poor fan has many times the airflow ability then the warmed / expanded air.
This motherboard orientation makes supplying CPU cooler with cool air easier, but not as good for GPU coolers.
Normal motherboard orientation is better for GPU coolers but very hard to supply cool air to CPU cooler
Quarter turn orientation like SiverStone (which they have patent on) is better but requires case to have taller feet to allow good flow of air to bottom fans. Normal case feet only give about 18mm of bottom clearance while 2x 140mm intakes side by side need 40-50mm.
Here is illustration.