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Push/Pull strange occurence

post #1 of 8
Thread Starter 
Hello,

I have an H60 on one of my rigs (not real water cooling, I know) and I came up with an extra fan I had laying around. I thought I would put it on there for push/pull. Anyway, once it was attached via a PWM splitter cable, my temps rose about 12-15 degrees: ~40 load to 57 load. I put the i72600k at stock speeds for this test. The fan was pulling air in the correct direction (made sure by testing which way it would blow a tissue before attaching). Does anyone know why this could be happening? The fan works fine independently. My only thought is that it is a different fan, so airflow is disrupted in some way? Hopefully someone can shed some light on this issue for me.

The fans are the default Corsair fan and the extra was a CM fan off a Hyper 212 series.
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post #2 of 8
I'm guessing it's because of the different fans, since different fans at different speed/RPM can cause turbulence, hence lowering the efficiency of whichever fan was working the best in the first place.
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post #3 of 8
Seems strange unless the fans are really really different. People have tested using different fans and saw no difference if the fans were pretty close in specs.
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post #4 of 8
I'd check the direction of the base fan again. That or the second fan is slowing down the air some how.
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post #5 of 8
Or maybe the motherboard PWM header can't provide enough power to 2 fans via a splitter?

(Long shot, but it's a question I've been having but not motivated enough to start a thread to ask yet.)
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post #6 of 8
Thread Starter 
I don't think it's a power issue because when I remove the fan the temps go back to normal, even when the fan is still running but out of the way. It must be a speed or air pressure issue with the fan. I might borrow the fan from my dad's 212+, put it together with mine, and see what happens.

Thanks for the thoughts all.
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D Frame
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901
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120GB Kingston SSDNow 2x Western Digital Caviar Black 1TB RAID0 Western Digital Green 1TB Corsair H60 Push-Pull 
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Windows 10 Pro, Kali, CentOS7 Asus PB278Q  Razer Blackwidow Tournament Chroma (Greens) Antec Truepower 750W 
CaseMouseMouse PadAudio
InWin D frame Razer Naga Hex (Wraith Red) Steelseries Mass AudioEngine A5+ Bamboo 
CPUMotherboardRAMHard Drive
A10 7850K @ 4.4GHz Gigabyte FM2+ A88X 16GB Corsair Vengeance 2133 13.5TB total (Fully Redundant) 
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post #7 of 8
Please don't think I'm trying to insult anyone, but are both fans flowing in the same direction?

It wouldn't be the first time someone installed the fans like this >|< and should be like this >|>

Greg
post #8 of 8
Quote:
Originally Posted by hammong View Post

Please don't think I'm trying to insult anyone, but are both fans flowing in the same direction?

It wouldn't be the first time someone installed the fans like this >|< and should be like this >|>

Greg

Thats what I was thinking too.
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