Originally Posted by Crazy9000;13362131
There are also "forced air" cooling setups that a lot of servers use, where a lot of air is forced through the case, so that none of the components need a fan on them. This is of course not "passive", as the heatsinks rely on the increased air flow to cool the components.
That actually sounds like it would be a passive cooling situation. Passive doesn't mean "no airflow and basking in it's own heat byproduct". The very definition of passive means the cooling (heatink) of the component it is attached to both has no fan, and relies on the cooling of something OTHER than itself, regardless of what/where it is. In fact, most passive stuff COUNTS on the airflow around it to compensate. That is the definition of passive. So technically, no fan means it's passive, period.
To add to that, yeah, I'd say a fan dedicated to the purpose of cooling the component, that is close enough to the component, even if not attached, would be a "grey area" exception. It'd still be passive by definition, but would be "cheating" essentially. If that source of cooling is for something else (like exhaust) and just so happens to ALSO be the method of cooling for the CPU (ala, like my example of how many Dell PCs do it with a shroud), then it's totally fair game to be called passive.
To summarize, if it has no fan, it means it's passive, period. The lone exception is "cheating" by having a "spot cooling" fan for the SOLE PURPOSE of cooling the CPU, namely one within the case that isn't otherwise there for case airflow (intake/exhaust).
Originally Posted by Machiyariko;13362087
It sounds like the general consensus is that this setup is not passively cooled.
Is that a "spot cooling" fan that could be considered a "fan that is for the sole purpose of cooling the CPU despite not being affixed to the CPU's heatsink"? If so, then I wouldn't "consider" it passive for sake of a competition, although it is passive by definition. If it's moreso for airflow of the case and such that just so happens to be directly in line with the CPU, I'd say it's fair game.Edited by Princess Garnet - 5/2/11 at 11:15pm