Saturday, 10 August 2019

fan - Does running a computer with the case open mess with the airflow/cooling?

My friends say that it should actually improve the cooling since there is more air available to it, especially the CPU fan. I have to admit that it at least looks like it would stay cooler.


I disagree. It should prevent the case fans from effectively running fast-moving air across the components, right? As for the CPU fan, the air around it isn't being refreshed as much with the case open, I think, so it's getting hotter, so the CPU cooling isn't as effective. Not that it would kill the computer, but it seems to me that it would make the cooling less efficient.


Who's right? This is about settling an argument, not trying to solve a real problem. The computer in question is a custom-made "1337 gaming b0x0r r!g" (you know the type) school computer with like 8 fans that's being used right now to make graphene using a LightScribe DVD burner (not a heavy task), and its case is open. The key here is that it has a good-quality case, and we can't try heat tests on it.

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