sharkoon silent eagle 2000 rpm

Solution
It's going to be as noisy as a leaf blower.

Why not pick out a 120mm fan at half that RPM? In essence a larger fan blade will move much more air per similar rotation or in other words reduced rotations of a 120mm fan will mean higher rotations of an 80mm fan.

If your chassis can support it, you're going to see more benefit with a 140mm fan instead of a 120mm fan.
It's going to be as noisy as a leaf blower.

Why not pick out a 120mm fan at half that RPM? In essence a larger fan blade will move much more air per similar rotation or in other words reduced rotations of a 120mm fan will mean higher rotations of an 80mm fan.

If your chassis can support it, you're going to see more benefit with a 140mm fan instead of a 120mm fan.
 
Solution