I have a fairly large aftermarket cooler (Xigmatek Gaia) for my i5-2500k processor. It shipped with one fan (pushing air into the cooler) but has the ability to put a 2nd fan on it (push-pull configuration). I believe the fan is starting to fail, so I'm going to replace it.
My question is, should I go ahead and get two fans for it? I know in cooling the thought is "more is better" but I'm having a hard time believing that two fans blowing an equal volume of air would somehow cool better than just the single fan. My attempts to Google the question were stymied by large amounts of marketing with little info about actual effectiveness, especially in the 1 vs. 2 area. Anyone out there have some know-how about it, especially with regards to the physics of cooling/airflow?
For the record, I am not overclocking now because I have concerns about the fan, but I have in the past and probably will in the future.