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Corsair H100 / H80 / H60 noise, grinding pump - *fix* + official Corsair response - Page 42

post #411 of 1734
I pulled the trigger knowing the issue that I got one from amazon recently. I'm waiting for the final parts to arrive this week for a new build and I know it's been confirmed that this problem has nothing to do with the lot code but mine is 12179403 and I don't think I have seen this lot code from others who are having the issue yet, so hopefully I get lucky? If not, I have the diode adapter coming as a backup. Will report how it goes.
post #412 of 1734
Where can I check the lot code?
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post #413 of 1734
Quote:
Originally Posted by kizwan View Post

Where can I check the lot code?

On the serial stick, where it says "CWCH100" (if you have a h100), there should be a number right above it, and thats the code.
post #414 of 1734
Thanks. Mine is 12159403 & it doesn't make any noise...yet. Hope never.
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post #415 of 1734
Thread Starter 
First four digits are the production date, so 121559403 is year 2012 week 15. This is the only significant part of the number, as you might be able to tell if your is "new enough" to be a part of the "enhanced QC screening process".
Of course not all units are noisy, but there's a combination of factors that might result in you having a noisy one, if you're unlucky.
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post #416 of 1734
Quote:
Originally Posted by wlw wl View Post

The fan controller is powered from 3,3V supplied by an LDO voltage regulator, so it doesn't care if you run it from 12V or 10V. There must be something else going on, the fans are having the ground switched with a PWM signal, maybe they aren't happy with 10V and they don't achieve speeds the controller wants them to achieve, but you'd have to know the firmware of the controller MCU to guess what exactly is happening. What I'm thinking is some safety feature like "the fans aren't working as they should, fall back to full speed".

Does this mean that there is no effect on the actual fans if we lower the voltage to the pump, as per my previous posting my pump is silent if I drop it to 9.5 volts, but will doing that have any effect on anything apart from the pump RPM? I want the fans to spin as normal at normal speeds.

Also, is there any risk to anything running at 9.5 volts?

Thanks
Marcus
post #417 of 1734
Thread Starter 
No, it only means that the fan controller circuit is powered from its own voltage regulator so the logic won't be hurt, but the fans connected to this controller are powered directly from the +12V rail. So if you drop the voltage from 12 to 10 volts, it WILL affect the speed of the fans. Depending on how the firmware will behave, it might only affect the tops speed the fans will be able to achieve, or influence the whole range of fan speeds.

The question "is this voltage good for me" must be answered by you based on the temperatures you're getting. Lowering the voltage affects not only the fans' speed, but the pump's speed as well, and both those factor contribute to the overall cooling efficiency of the unit.
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post #418 of 1734
Very simple fix for me, I noticed that the pump was only grinding at lower speeds, so I disabled the smart CPU controller in the BIOS and now it is silent.

btw very impressed with the cooler. 2500k running at 4.5 ghz 1.308v never sees 63+ degrees when stress testing, I was expecting worse.
Edited by insertacoolname - 6/18/12 at 3:49pm
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post #419 of 1734
Solution = Don't buy crappy Market Hype products then try to fix them.

Just avoid the Corsair H Fail Series. These things have always been a bad idea, now there quality reaffirms that.

If you bought one of these then Shame on you.
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post #420 of 1734
Quote:
Originally Posted by Acefire View Post

Solution = Don't buy crappy Market Hype products then try to fix them.
Just avoid the Corsair H Fail Series. These things have always been a bad idea, now there quality reaffirms that.
If you bought one of these then Shame on you.

Well done for blessing this thread with your intellectualism, now begone.
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