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Push & Pull in Case & Heatsink?

post #1 of 15
Thread Starter 
Sorry if I title is misleading. I have a push and pull fan on my heatsink and I was wondering what one I would want to run faster. They are both the same fans on a CM Hyper 212+. I have one hooked to Fan1 and on to Fan2 on my mobo. I set it so that it it run slower at low temps and crank up at higher temps. When I do so, one of my fans runs faster than the other up until they are at full speed. My bios only lets me adjust both at once, not each individually.

So anyways, my question is what fan do I want to run faster on my heatsink? My push or my pull fan? Right now I have my pull fan running faster than the push.

My other question is, do I want more fans pushing air into my case, or more fans pulling air out of my case? Right now I just have the stock configuration on my Phantom. 2x 120mm push, 1x 120mm pull, 1x 200mm pull. My Gpu seems to get pretty hot so I want a way to keep it cool.

Thanks!
Alice
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Alice
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post #2 of 15
the idea is to run them at the same speed(same fans). best way is to get a 2 into 1 and run it off the mobo cpu fan connector . then just let the system control it.
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post #3 of 15
Thread Starter 
Well, it does when it maxes out at 2000rpm. Or else the pull fan runs about 400rpm faster than the push fan. I don't get why they would make it like this seeing as how both plugs are for the Cpu Fan.
Alice
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Alice
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post #4 of 15
theres only 1 cpu fan connector. the others are for case fans.
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post #5 of 15
Thread Starter 
Well, mine has 2 Cpu fan connectors. It's labeled as Cpu Fan1 and Cpu Fan2, and it even labels it as Cpu Fan in the Bios. That's why when you adjust the Cpu Fan it adjusts both my fans. The other fans are labeled as Chassis Fan, but I don't use those since I have fan controllers on my case.
Alice
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post #6 of 15
Are you sure that one isn't running faster due to all the air being pushed into it from the other one?
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post #7 of 15
Thread Starter 
Quote:
Originally Posted by BlahBlahBlah View Post
Are you sure that one isn't running faster due to all the air being pushed into it from the other one?
No, because I had my push fan running faster before, so I switched them around cuz I thought it would be better to have my pull going faster than my push. That's why I'm asking now to make sure. Haha.
Alice
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Alice
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post #8 of 15
Have you tried updating BIOS?

On a side note, I remember reading that push/pull fans running at different RPMs degrade the life of the fan that is being blown into. If a BIOS update doesn't fix it, I would recommend running them both at max and forget it unless the noise is unbearable?
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post #9 of 15
If you can't get the mb to run them both at the same speed, buy one of these. $3 with free shipping. I've done 400+ fan changes with mine. It's still going strong.

All case fans intake, all filtered. Remove rear fan and grill to allow the air to escape passively, and thus quietly. Air goes where you push it.
alpha updated
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secundus
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alpha updated
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secundus
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post #10 of 15
Thread Starter 
Why the crap would they make 2 Cpu fans run at different speeds? Haha. I guess I could pick on of those up and just hook it up to one Cpu Fan thing instead of both then huh.
Alice
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CPUMotherboardGraphicsRAM
2600K @ 4.6Ghz (1.400v) AsRock Extreme 4 Sapphire 7970 1125/1575 G.Skill RipjawsX DDR3 1600 CL8 (4x4Gb) 
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Samsung 840 Wester Digital RE4 (Raid0) Seagate Barracuda Windows 7 64bit Pro 
MonitorMonitorKeyboardPower
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Alice
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CPUMotherboardGraphicsRAM
2600K @ 4.6Ghz (1.400v) AsRock Extreme 4 Sapphire 7970 1125/1575 G.Skill RipjawsX DDR3 1600 CL8 (4x4Gb) 
Hard DriveHard DriveHard DriveOS
Samsung 840 Wester Digital RE4 (Raid0) Seagate Barracuda Windows 7 64bit Pro 
MonitorMonitorKeyboardPower
2x Asus VW246H Qnix QX2710 Ducky DK1008 (Mx Red) Corsair HX1000 
CaseMouse
NZXT Phantom Razer Deathadder 
  hide details  
Reply
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