What would be the best fan configuration for the SM 580? I'm using bottom exhaust and top intake from the AIO.
Has someone run temps tests with different configurations?
Depends on whether you mind possibly warming the other components in your system by a few degrees more. Top intake AIO will be better for CPU, but it will heat up the other components a bit more, but maybe acceptably so (check SSD, GPU, chipset, VRM temps). The "best fan configuration" question always needs to be qualified by what components you are using (if they have adequate cooling on their own, a little more heat in system won't matter), and what you are prioritizing (CPU, GPU, or overall system temps). A moderate power CPU (e.g. 3600X) won't dump a lot of heat into the system with intake rad, but an OCed 9900K or 3900X might. People also vary on what's an "acceptable" temperature; for some, it's okay as long as the processor doesn't hit TJ max, but for others the goal is lowest temp possible.
I'm pure air (at least for my SM580 build) and like system fans to cool everything in a max-airflow-at-lowest-noise-level-possible kinda guy, so I almost always do front-to-back or bottom-to-top cooling; this is why I like the SM580: there aren't even many full-ATX cases that support 4x 140mm fans. I also worry a little that heat pools too much when you exhaust at the bottom and there isn't a lot of clearance on a table. Might not be an actual issue, but I just don't like it conceptually (weird, I know).
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