cooling fan

Community General Discussions
1

Hi all,

Does anyone know, if a cooling fan should blow air over a heatsink, or suck air over a heatsink?

Keep the answers clean, please guys.

 

(Link to ridicule page.)

2

Blowing will generally be

Blowing will generally be more efficient and easier to direct than sucking, so most designs will have at least one blowing fan, with possible additional sucking fans for getting the warm air out of the way.

3

Thanks guys,I wasn’t sure if

Thanks guys,

I wasn’t sure if there was a certain way, it should be done.

4

blow on

Short explanation: you want to maximise contact with air, so blowing on make the heatsink to come in contact with more air, which is the purpose of fins in the heatsink. Anyway even a sucking fan helps, just lesser:-)