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Push-Pull vs Single-Fan Configurations

jiyeon
By jiyeon
in Cooling
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Hey, I was looking into getting a second fan for my Arctic Freezer 33 eSports One to evolve it into a push-pull 33 eSports Edition.

On the tier list, the eSports Edition is rated as a high-end and the eSports One is rated as a better Hyper 212, so I was sure push-pull would make all the difference.

 

After my experiment with sticking a Hyper 212 fan onto my 33 eSports One, it was literally a useless endeavour.

 

So, onto my real question:

 

What's the biggest temperature difference I can expect from using a single fan versus a push-pull config?

For example, going from an eSports One to an eSports Edition?

 

mechanical keyboard switches aficionado & hi-fi audio enthusiast

switch reviews • how i lube mx-style keyboard switches

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16 minutes ago, emosun said:

zero i imagine , a single fan isn't going to have an issue moving air through the cooler to justify a second fan only 2 inches away

Yeah, I see. But the tier list worships this fan addition as some godly upgrade so I'm hella on the fence.

mechanical keyboard switches aficionado & hi-fi audio enthusiast

switch reviews • how i lube mx-style keyboard switches

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On 8/2/2018 at 9:39 PM, seoz said:

Yeah, I see. But the tier list worships this fan addition as some godly upgrade so I'm hella on the fence.

It's not a big upgrade. Each tier bleeds slightly into the tiers above and below it but generally trades blows with coolers in the same tier. The eSports Edition is a high end 120mm heatsink in that it trades blows with the other best performing 120mm heatsinks. 

A second fan improves temps by a few degrees and the difference in degrees will vary depending on how heavy the load is. It's usually not worth the extra money to add an additional fan as opposed to getting a better cooler to begin with. 

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On U14S I have max temps dropped from 74C to 68C. But main improvement is under gaming loads. The fans are setup so that 2nd starts when CPU goes over 60C and neither goes over 80% of max rpm anyway. So under gaming and even rendering loads I don't see much over 60C. CPU is running manual voltages all the time.

 

You could try to improve temps by setting pushing fan to move more air than pulling fan. But on smaller heatsink it wouldn't still be big drop.

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