They have cases that flip the whole pc upside down so your cpu is at the middle of the case. IT cools better than a full tower case .
Yes heat does not rise. But hot air does .
What happens with the graphics card is you normaly blow air at the chip and then the air has no where to go.
To its left is a the back of the case with pci covers on thus no where to escape and to the right is where whatever little air from your intake fan is hitting by you.
That is why the vga silencer works so well. It dumps the air out of the case .
Imagine if you had stead air flow coming rigth at the vga silencer.
Yes heat does not rise. But hot air does .
What happens with the graphics card is you normaly blow air at the chip and then the air has no where to go.
To its left is a the back of the case with pci covers on thus no where to escape and to the right is where whatever little air from your intake fan is hitting by you.
That is why the vga silencer works so well. It dumps the air out of the case .
Imagine if you had stead air flow coming rigth at the vga silencer.