Originally Posted by EduFurtado
also wrong. You don't need uber airflow.
You heat the air around your heatsink. Warm air is lighter than cold air. Cold air goes down, warm air goes up. You move the air "passively" when cooling passively.
Search overclock.net for "fanless rig" or "fanless system"
your gonna find plenty of proof that you can cool without any fans anywhere near your hardware
You're going to find plenty of lower-power
rigs being passively cooled. Oh, and the force of "hot air rising" is basically nil and can be counter-acted by the slightest of physical forces. The amount of airflow that you get from hot air rising is almost nothing unless the air is super-heated.
And yes, you can go fanless for a heatsink, it's generally not a good idea to go fanless on a complete system if it's not a low-power system, especially one that sees larger loads.
Servers are typically built with heatsink that have no dedicated fans on them. This is so if a fan were to fail, being a dedicated one to the heatsink, that CPU won't overheat. They are typically built with larger heatsinks with no fan on them and then there is an array of fans in the front and rear of the case providing the airflow for the heatsinks.Edited by Shrimpykins - 12/29/10 at 8:07am