1
I ordered a water cooling all-in-one solution for my CPU and I was wondering if I really need both fans that come shipped with it, or if one fan is enough.
What I am talking about is one of those coolers, where there is a fan on both sides of the radiator:
It seems to me that the second fan doesn't have a lot of work since the first fan already got the air moving and I don't see it slowing down that much inside the radiator, or am I wrong here?
Can I just leave off one fan and have a similar performance and if yes, which one should I keep? If no, why are two fans necessary or to be recommended? I am planning to mount it at the rear side of the case next to the IO-panel.
2I think you're basically right. The difference between a single fan and two identical fans in a push-pull configuration is usually just a few degrees. Unless you're trying to get every possible drop of overclocking out of your CPU, you probably only need one. – David Schwartz – 2016-01-02T23:01:34.840
It entirely depends if your willing to accept the performance difference. To know how much that difference is, benchmark both configurations, then make a decision. – Ramhound – 2016-01-02T23:03:02.243
@DavidSchwartz So which fan would you leave out? The one between the case and the radiator or the other one on the inside? – comfreak – 2016-01-02T23:04:15.323
@Ramhound Do you have any rough guess or some numbers from your experience how much that typically is? I am not (yet) planning to overclock, my main goal is to reduce temperatures and make the whole computer more quiet. – comfreak – 2016-01-02T23:06:13.617
Every cooler, case, and CPU will be different. Why don't you just benchmark it yourself since its your hardware? – Ramhound – 2016-01-02T23:09:20.623
2@comfreak The fan that pushes air is much more efficient than the fan that pulls air. So you want the fan that pushes air into the radiator. – David Schwartz – 2016-01-02T23:16:23.643
If quietness is your goal, would you not be better off with running both fans at lower RPM ? – davidgo – 2016-01-03T00:03:21.107
You need one of these...https://www.pugetsystems.com/submerged.php
– Moab – 2016-01-03T01:36:34.553