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GT AP-15's running below advertised RPMs

post #1 of 5
Thread Starter 
So I installed my GT AP-15's in a push/pull intake config for my H70 a couple days ago. However, both fans are running at around 1757 rpms, occasionally jumping up to 1795 rpms.

I did have them both run through the corsair splitter, so I took that factor away and put them both in their own fan slot on the MOBO. However, the speeds did not increase.

I was wondering if this speeds I am getting are within the standard deviation of fan speeds when buying these fans, or if something is preventing them from getting all the way up to 1850 rpms.

I'm using ASUS AI Suite to see how fast my RPM's are going.

Here are a couple of pictures to show my fan speeds:

I have one of them running through the fan called "CPU Fan" and the other through the one called "Power".
Edited by Gohan_Nightwing - 6/15/11 at 4:37pm
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Nightwing
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post #2 of 5
does the fans not say RPM: 1850(+-10%)?

I know my fans does
post #3 of 5
Thread Starter 
Quote:
Originally Posted by pangeltveit;13886848 
does the fans not say RPM: 1850(+-10%)?

I know my fans does

It does on other fan cases I own. But it didn't on the GT AP-15s case.
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post #4 of 5
They are usually spec'd at +/- 10%, so as long as they run between 1665 and 2035RPM then they are within manufacturer's specifications. Quite a big range there really.

You can always try taking them off the rad and seeing what they run at in free air, but to be honest I think you are fine as is.

Remember it may well be the RPM reporting device inside the fan that is out, these are hardly precision readouts more just indications.

Edit: My two GT AP-15's supposedly run at 1740 and 1875RPM at 12V.
Edited by GingerJohn - 6/15/11 at 4:51pm
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by GingerJohn;13886919 
They are usually spec'd at +/- 10%, so as long as they run between 1665 and 2035RPM then they are within manufacturer's specifications. Quite a big range there really.

You can always try taking them off the rad and seeing what they run at in free air, but to be honest I think you are fine as is.

Remember it may well be the RPM reporting device inside the fan that is out, these are hardly precision readouts more just indications.

I thought that might be the case. Thanks for the confirmation!
Nightwing
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Hard DriveOptical DriveCoolingCooling
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Nightwing
(27 items)
 
  
CPUMotherboardGraphicsGraphics
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GraphicsRAMHard DriveHard Drive
MSI 290X Lightning G.SKILL PI Series 6GB WD Caviar Black HDD Crucial C300 SSD 
Hard DriveOptical DriveCoolingCooling
Clickfree External HDD HP BD240I Blu Ray Combo Drive Corsair H70 with GT AP-15's in Push/Pull Intake... Scythe Kama Flex SA1325FDB12H Case Fan 
OSMonitorKeyboardPower
Windows 7 64 bit Ultimate Edition Alienware Optx AW2310 Deck Legend - Ice - Linear PS/2 Interface Corsair AX750 Modular Power Supply 
CaseMouseMouse PadAudio
Enthoo Luxe Logitech MX 518 Gaming-Grade Optical Mouse SteelSeries SX Game Pad Sound Blaster X-Fi Titanium HD  
AudioAudioOtherOther
Sennheiser HD 650 Schiit Magni Headphones Amplifier Logitech C905 Webcam Blue Yeti Microphone 
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