looking to build a machine

[AutoWiz]

Do you think 280cfm and 55db noise level is overkill for cooling the stepper drivers and ssr on a 3d printer? The power supply should already have its own fan and noise source, right? So how loud do you want your printer to be? My GEEETech i3 stays cool with a 40mm 12v fan. I mean it is not exactly a robust gaming graphics card with a gpu that has a higher thermal density than a nuclear reactor. No. This is like a cheap arm based Nintendo handheld. and the stick on aluminum heatsinks are almost if not optional.

For fans you should be searching the lowest possible db or noise level, the right voltage, and what fits in the area you need it to and what has a large enough surface area to move air where you need it to move. But you don't need to create a wind tunnel in your control box or a tornado on your control board. Hell you might blow those stick on heatsinks off the stepper drivers.