Hornet85 Posted December 23, 2013 Share Posted December 23, 2013 First of all, I do understand that the RM850 doesn't have any orientation requirement, it can face up or down. But here's my concern for my particular case. Please advise. Base on the system spec I'm building (not my own PC in my profile), the RM850's fan will probably not turn on most of the time. From what I understood, it was design to rely on ambient airflow when the fan isn't spinning. The casing mounts the PSU at the bottom. I'm thinking, if the fan is facing downwards, there will be almost no any air movement through the PSU (no any fans blowing directly to the PC where it will be located.) Does that mean I should face the fan up, to allow the flowing air in the casing to create some airflow through the PSU? My only concern is is dust settling right into the PSU, or the hot air being dump by the graphic card. On the other hand, if its facing down, the heat might get trapped in the PSU :sigh!: Thanks for your time. Link to comment Share on other sites More sharing options...
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